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In this paper, we propose a P2P-based live streaming system called PcubeCast. Different from conventional P2P systems, PcubeCast utilizes servers to ensure end-user QoS. Thus, the proposed PcubeCast takes advantage of traditional systems: 1) Quality-of-Service(QoS) from client-server systems and 2) scalability and cost reduction from P2P systems. Through the experiments with real-world application...
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...
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...
To deliver media streaming applications efficiently, researchers have developed three practical mechanisms, each of which has its virtues and limitations: Infrastructure-based CDN, Proxy-based approaches and P2P Systems. To address some of the above system limitations we present an enhanced media streaming design. Our design organizes its network entities in a structured P2P manner to provide a large...
Network address translation (NAT) causes well-known difficulties for distributed hash table (DHT) application, which needs end-to-end communication. This paper focuses on the impact of NAT on the lookup performance of DHT. The evaluation models considering the impact of NATs are presented for the performances of three representative lookup strategies (symmetric recursive routing, semi-recursive routing...
In this paper, we have proposed a hybrid P2P overlay approach with tree optimization, referred to as HOWTO, for live media streaming. In the proposed scheme, the hybrid P2P overlay network consists of mesh and tree overlay. The mesh overlay is organized by peers that have the similar bandwidth ranges in geographical place. The tree overlay is formed by promoting peers that are considered stable in...
In this paper, we present an effective approach for live media streaming based on BitTorrent mechanism. In the approach, several modifications have been incorporated into BitTorrent to support on-time content delivery. First, pieces are selected based on their scheduler play back deadline. Second, source behaves in a push-based way instead of pull-based way. Finally, each peer periodically examines...
For supporting peer to peer (P2P) based live media streaming, a P2P overlay network should be able to accommodate robustness, peer heterogeneity, and scalability. In this paper, we have proposed a Hybrid P2P Overlay (HyPO) approach for live media streaming. In the proposed scheme, the overlay network consists of mesh and tree overlay. The mesh overlay is organized by peers that have the similar bandwidth...
Large-scale stream media delivery over Internet is one hot and hard problem. Three main solutions have been developed for this purpose. Content delivery network (CDN) can provide high quality streaming service with high cost. Server-based proxies are cost-effective but not scalable due to the limited proxy capacity and its centralized control. Peer-to-peer (P2P) network is scalable but does not guarantee...
Peer-to-peer (P2P) based live video streaming system has emerged as a promising solution for the Internet video streaming applications, partly evident from commercial deployment of several large-scale P2P streaming systems. The key is to leverage the resources available at end users, which offers great potential to scale in the Internet. Flash crowd poses a unique challenge for live streaming systems,...
A scheme that exploits the broadcast nature of the wireless communication in order to achieve multicast content delivery is presented in this paper. As opposed to broadcasting, this method enables the clients to determine on-line the delivered content, and thus preserves the advantages of an individual service. On the other hand, a multicast content delivery is much more efficient than a unicast content...
Peer-to-peer (P2P) systems are becoming increasingly popular due to their ability to deliver large amounts of data at a reduced deployment cost. In addition to fostering the development of novel media applications, P2P systems also represent an interesting alternative paradigm for media streaming applications that can benefit from the inherent self organization and resource scalability available in...
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