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In this paper, we propose a hybrid Peer-to-Peer (P2P) architecture for Content Delivery Networks (CDNs). The basic idea of the proposed method is to prepare a P2P overlay for each Autonomous System (AS) and to map nodes to the P2P overlays by referring to the information maintained by the DNS server deployed by the system. The performance of the proposed scheme is evaluated by simulation. The result...
Small playback lag in live streaming is important for time-critical and interactive applications such as live stock, market updates, sports and remote education. In this paper, we present Elite addresses the playback lag problem in peer-assisted live streaming systems. Instead of deploying a large initial offset to all the users, Elite seeks the possibility of initializing users with layered proportional...
Traditional peer-to-peer live streaming systems usually have one specific streaming rate for one single channel. However, with the terminals diversifying, especially smart mobile phones bursting, the desire for multi-rates from one single channel topology of P2P live streaming becomes urgent, while considering that the network environments and topologies always change momentarily. High rate stream...
In order to effectively improve the success rate of transactions among nodes of p2p patch distribution system, this trust model was introduced to the p2p patch distribution system, the design of trust model was given and the specific implementation of each module was described in detail, finally the performance of trust model achieved were tested.
The increasing demand for value added services is a driver for telecommunication companies to find simple and cost efficient solutions for automated service creation, as bespoke service development for small customer groups is not economically viable. The aim of this paper is to propose a peer-to-peer based environment that supports deployment and discovery of value-added services. The identified...
In this paper, we propose a new Time-Driven Mesh (TDM) overlay network for peer-to-peer video-on-demand systems. In our TDM, all of the peers construct a mesh network connected among them in chronological order of their playback starting times. In order to efficiently search multiple streaming suppliers, we manage the playback starting time and the network location information for all of the peers...
Nowadays, the majority share of the Internet traffic is contributed by video streaming services. Due to the growth of Internet bandwidth, it is possible to provide HD live streaming services on the Internet which will be a trend in the near future. As the population of the users of HD live streaming services increases, the bandwidth will become a problem again. Centralized-based systems are not suitable...
Multiplayer Online Games (MOG) in-game advertisements require dynamic delivery of large images for potentially hundreds of concurrent users. We present an approach for a scalable advertisement image delivery mechanism using the BitTorrent Peer-to-Peer (P2P) protocol. Simulations were conducted comparing a client-server model and our proposed model, where each MOG player acts as a P2P node in the overall...
Unstructured BitTorrent-like Peer-to-Peer networks have been extensively studied as an important enabling technology for Video-on-Demand. While most studies maintain the pull-based nature of unstructured Peer-to-Peer networks, recent ones are investigating the combination of pull and push operations. The goal of the proposed push/pull protocols is to make more effcient use of the available bandwidth,...
For current P2P-VoD systems, three fundamental problems exit in user experience: exceedingly large startup delay, long jump latency, and poor playback continuity. These problems primarily stem from lack of media data. In this paper, we propose Multi-Task Downloading with Bandwidth Control (MTD(BC)), an efficient and practical mechanism to prefetch media data. In MTD, a user can download multiple videos...
Media streaming is an important Internet application and has received more and more attention in recent years. Traditional media streaming systems are deployed in a server-client mode which scales poorly with the increasing population of the clients. Peer-to-peer media streaming can greatly enhance the scalability of the system by employing the clients to help forward the media content. In this paper,...
Networked virtual environments are increasingly used for collaboration tasks and other interactive applications. While the graphics in such virtual worlds are usually three-dimensional, interactive 3D voice support is still in its infancy. Here we describe our demonstration system that supports P2P-based positional audio and interactive voice communication with the SecondLife platform.
Peer-to-peer (P2P) on-demand streaming systems inevitably suffer from peers churn that is the inherent dynamic characteristic of overlay network. With frequent peer departure, a large amount of media data cached on peer disk turns offline and unavailable, which becomes the major reason of heavy server load. To address the above issue, a new proactive data replication mechanism is proposed and implemented...
Users in a Peer-to-Peer Video on Demand (P2P VoD) system are allowed to watch any video file at any point in time and to use VCR operations like fast forward, rewind and pause at any time, which decreases their ability to help each other and offload the server. Encouraging peers to stay in the system longer and share the video files they have downloaded completely can greatly increase peers' cooperation...
With the rapid development of network application, the use of media streaming system became more and more popular, greatly enhancing the user experience. But as the number of internet users is increasing sharply, the traditional Client-Server (C/S) architecture cannot afford so many clients (end-users), and the network scalability was so poor. The disadvantages of this C/S architecture became apparent...
With the advancement of peer-to-peer technology, media streaming applications become more and more popular in the Internet. However, the traditional development methods for this kind of applications need developers not only to consider the application logic but also to manage the dynamics of Internet resources, thus increasing the difficulty of development and limiting the deployment of personal video...
How to improve the scalability and QoS of peer-to-peer on-demand streaming system based on unstructured overlay is still a problem. Researchers have proposed some memory based buffering schemes to archive the targets. Considering the limited space of memory on one peer, a new caching strategy, which can integrate memory-caching strategy with disk-caching strategy, is proposed to make full use of peers...
Data scheduling is the key issue in peer-to-peer streaming system, especially in peer-to-peer VoD system. This paper mainly focuses on data chunkspsila priority definition of data scheduling in peer-to-peer VoD system. After carefully studying the meanings of regular rarest first scheduling and random scheduling, a local-rarest-random-heurist (LR2H) scheduling is proposed in order to fully use the...
In the P2PVoD system, the data assignment is in essence a NP-hard issue and it is unable to find a polynomial time optimal algorithm. Meanwhile, selfish behavior of peers is one of the key problems that influence the optimal solution. In this paper, a game-theoretic data assignment scheme is presented.Peers are cooperating with each other in order to maximize social payoff. This scheme is also based...
Selecting partner candidates for data transferring plays an important role in the P2P (peer-to-peer) media streaming system. Most traditional P2P media streaming systems do not consider the physical network among the peers, while selecting partner candidates according to physical network can reduce the latency of the data transferring and improve the quality of service. Aiming at objectives of P2P...
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