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The transition to IPv6 cellular networks creates uncertainty for content providers (CPs) and content delivery networks (CDNs) of whether and how to follow suit. Do CPs that update their CDN contracts to allow IPv6 hosting achieve better, or worse performance in mobile networks? Should CDNs continue to host mobile content over IPv4 networks, or persuade to their CP customers the performance benefits of IPv6 content delivery? In this paper we answer these questions through a comprehensive comparison of IPv4 and IPv6 mobile Web performance in cellular networks in the US from the point of view of Akamai's content delivery infrastructure. Our data show that IPv6 hosting outperforms legacy IPv4 paths in mobile Web. Our analysis leads to clear recommendations for CPs to transition to IPv6-hosted mobile Web. Finally, we propose new mechanisms, through which CDNs can safely transition mobile content to IPv6-enabled servers for improved content delivery. [ABSTRACT FROM AUTHOR]

Content Delivery Network (CDN) is a specialized network for streaming media business. It can distribute high-quality, large-scale and rich multimedia content. In order to truly achieve local load balancing to CDN, this paper proposes a Streaming Media Load Balancing algorithmic based on local resources (SMLB). The algorithm can select a load balancing scheme automatically based on local resource conditions. It improves the scalability and robustness of the network. And it is able to locate a better proxy server node accurately. This paper gives the definition of local resources and the method that how to calculate the weight and the way to judge the condition of resources. Then, it designed SMLB algorithm. Finally, it proves the superiority of the proposed algorithm by experiment. [ABSTRACT FROM PUBLISHER]

Multimedia Content Delivery Networks (CDN) is used to improve the performance and reliability on Internet. In CDN architecture, the multimedia contents are replicated from the origin server to replica servers in order to improve the performance and minimize the use of network bandwidth. Efficient placing the multimedia contents in CDN is a challenging problem. There are five factors that can be used to determine the placement of multimedia contents, they are bandwidth availability, connection availability, storage availability, CPU availability, and memory availability. In this paper, a Particle Swarm Optimization (PSO) algorithm is adopted to solve this issue. PSO algorithm uses these five different input parameters as different dimensions. In this five dimension searching space, PSO algorithm can find out the global optimal solution. With this global optimal solution, it is the most appropriate replica server that must place the multimedia content. The simulation results show that the PSO algorithm can achieve a better performance than other algorithms. [ABSTRACT FROM PUBLISHER]

Content Delivery Networks (CDNs) have evolved to overcome the inherent limitations of the Internet in terms of user perceived Quality of Service (QoS) when accessing Web content. A CDN replicates content from the origin server to cache servers (also called surrogates), scattered over the globe, in order to deliver content to end-users in a reliable and timely manner from nearby optimal surrogates. Like many other network systems and services, securing data is becoming a crucial need for CDNs. Deploying and broadcasting contents across the geographically distributed servers require reliably secured flow and access control policies. In this article, we have developed a security mechanism for CDN based on dynamic source routing protocol where flow control can be supported with dynamic flow scenario. [ABSTRACT FROM PUBLISHER]

Considering that audiovisual services will highly impact network architecture in the coming year, we check the impact of the traffic growth from several traffic evolution paths. Some optimization scenarios are proposed and compared looking at the Total Cost of Ownership and the network dimensioning. We show that depending on the context, flattening IP hierarchical network, bypassing transit routers for audiovisual services, and using caching server can help scaling the network and reducing the TCO. [ABSTRACT FROM PUBLISHER]

It is well known that content distribution networks (CDN) are expensive technologies for distributing web contents. Universities and other non-profit organizations do not have enough financial means to deploy large web-servers or to use content distribution networks to improve their web access performance. In this work, we aim at building a hybrid P2P CDN network for web content distribution. Our proposed approach combines CDN efficiency with the advantage of P2P network. In short, we choose the peers whose capacities are high enough to be directory peers which play roles as CDN servers. And other peers named Content Peers keep the web content that they have ever accessed and serve the cached content to other peers who are close to them in the locality. Directory Peers and Content Peers are connected with each other using gossip protocols. We also propose an approach named Tri-DHT to search objects among directory peers. If a new peer wants to find some web content, it joins in the content overlay as a content peer. Then it chooses the nearest peer to get the file. A theoretical analysis shows that this approach can take advantage of P2P and CDN, and this solution can improve the user experience of websites accessing. [ABSTRACT FROM PUBLISHER]

The progresses on PC based 3D video display technology have made it feasible to provide 3D video streaming service over internet. Compared with 2D video streaming, 3D video streaming system demands more network bandwidth, computing power, and more complex transmission mechanism. There are rarely online 3D video services. In this paper, we describe a 3D video streaming services developed by our team cooperated with CNTV and NVIDIA. The main features of the proposed system are high compression performance of 3D video with low complexity both on processing and transmission. The system has been used to distribute 3D content for the 16th Asian Games Guangzhou. [ABSTRACT FROM PUBLISHER]

The proliferation of content on the internet is the result of users taking the role of Prosumers (Producers and Consumers). Enormous amount of content is generated and consumed by users. NGSON aims at providing users and services with reliable content delivery service which can handle large content in both live and offline mode. In this paper we discuss an experiment conducted based on NGSON's Content Delivery functionality which utilize the internet storage, cloud storage and operator deployed CDN. [ABSTRACT FROM PUBLISHER]

We address the problem of content delivery network for HD-VoD service. Content delivery network (CDN) is a network that puts users closer to the storage resources. The conventional CDN structure for video delivery is based on the IP-over- WDM network which could not meet the requirements for HD-VoD service, such as high-speed transfer and low latency and jitter. A novel all-optical CDN network model for high-definition VoD service is proposed in this paper. We introduce the concept of optical timeslot in the lightpath provision. A mini-control plane mechanism based on ring topology is also designed for the fast optical timeslot setup/release. Simulation results and analysis of our model is showed at the end of paper. [ABSTRACT FROM PUBLISHER]

Overlay networking has emerged as an alternative solution to solve many problems related to massive information distribution and processing tasks by providing enhanced services in application layer. For instance, overlay networks can improve data dissemination in P2P file sharing overlays and Content Distribution Networks (CDNs) in which delay is considered as a critical performance metric. A viable content distribution model could considerably minimize the completion time. The main objective of this paper is to design a new content distribution model for fast data dissemination in overlay networks with heterogeneous overlay nodes. The proposed content distribution model is a hybrid model that enables fast data dissemination in overlay networks by combining Chunk and Fluid content distribution models. [ABSTRACT FROM PUBLISHER]

the paper first analyzes the basic theory of the CDN (Content Delivery Network) audio and video system and the P2P (peer to peer) audio and video system, and presents its own limitations of each kind of the architecture. Then a hybrid model has been proposed, which integrates CDN and P2P to build the audio and video public network platform. The paper describes the architecture of the hybrid model, its work processes and characters in detail. The model takes full advantage of the two kinds of technologies, reducing the construction cost of the CDN as well as promoting the effective supervision of the P2P, so it gives us a brand new view of building the audio and video public network platform. [ABSTRACT FROM PUBLISHER]