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A novel Internet content distribution service Offline downloading service has emerged recently and attracted a large number of users all over the world. Unlike traditional Internet content distribution systems such as Bittorrent (BT), Offline downloading service uses dedicated cloud unities (Cache cloud) to store files what users wish to download and provide uploading, in order to guarantee file availability...
The peer-to-peer (P2P) networks provides a data distribution model that is attractive for Video on Demand (VoD) as it allows to decrease the costs and increase the scalability of video distribution. The two significant challenges in P2P VoD streaming are scalability and video quality. Both require efficient utilization of the resources in P2P network. Inspired by this finding, the paper addresses...
This paper targets at service provisioning and bandwidth allocation in single-service overlay multicast network by modeling it as a first-price monopoly auction. We propose a game theoretic pricing mechanism for determining the distribution of a typical multimedia content from an origin server, via the unicast links. By leveraging the rich theory of strategic mechanism design of microeconomics, we...
Peer-assisted content distribution technologies have been attracting attention. By using not only server resources but also the resources of end hosts (i.e., peers), we can reduce the offered load on servers as well as utilization of the access bandwidth of the servers. However, offered traffi to the network may increase because the traffi exchanged between peers passes across the network. Specificall,...
As compared to live peer-to-peer (P2P) streaming, modern P2P video-on-demand (VoD) systems have brought much larger volumes of videos and more interactive controls to the Internet users. Nevertheless, the larger number of available videos and the flexibility of allowing users to jump back and forth in a video, have led to much fewer numbers of concurrent peers watching at a similar pace, that reduces...
As the infrastructure-centric model of peer-to-peer streaming, recent overlay construction schemes compose a hierarchical topology of peers by grouping them into clusters. There is a server in each cluster that receives data from the source and relays it to its cluster members. In this paper, we propose an alternative infrastructure-centric peer-to-peer framework called BAHMO that constructs a hierarchical...
In this work we study the benefits of a peer- assisted approach to online backup applications, in which spare bandwidth and storage space of end- hosts complement that of an online storage service. Via simulations, we analyze the interplay between two key aspects of such applications: data placement and bandwidth allocation. Our analysis focuses on metrics such as the time required to complete a backup...
Peer-to-Peer (P2P) Video-on-Demand (VoD) systems with multiple channels are called multi-channel P2P VoD systems, which can be categorized into independent-channel P2P VoD systems and correlated-channel P2P VoD systems. Most of the existing P2P VoD systems are independent-channel P2P systems, in which the peers share resources with each other within the same channel. In this paper, we examine the...
Peer-to-peer (P2P) technology has become an attractive approach for enabling large-scale video streaming applications, but the factor of users' subjective preferences is usually ignored in such networks. As users have different demands on video quality, we have proposed several schemes, to address the design challenge of providing all users uninterrupted video with their desired qualities in case...
BitTorrent(BT)-like P2P traffic which occupy main network bandwidth affect other normal network applications badly. This paper presents a triggered dynamic mechanism for BT-like P2P bandwidth management. According to the variety of utilization percentage of egress router input/output cache, this mechanism could estimate the potential network congestion and be triggered to control the BT-like P2P bandwidth...
Peer-to-peer (P2P) video-on-demand (VoD) is a popular Internet service for a large number of concurrent users. Streaming capacity in a P2P VoD system is defined as the maximum streaming rate that can be received by every user. In this letter, we study the streaming capacity problem in P2P VoD systems. We formulate the streaming capacity problem into an optimization problem which maximizes the streaming...
Peer-to-peer (P2P) content distribution effectively solves the problem of large-scale streaming media delivery. But the performance of a P2P system is primarily bottlenecked, because the upload bandwidth of the participating peers is limited. Using helpers in the P2P system utilizes upload bandwidth of those idle peers uninterested in the delivered content, which further improves the performance of...
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...
The increasingly popular online hosting systems are designed to provide versatile and convenient platforms for content hosting and sharing. To guarantee adequate levels of service quality while conserving prohibitive server costs, such systems are often designed to integrate peer bandwidth contributions with strategic server resource provisioning in a complementary and transparent manner. This paper...
Quickly acquiring the data required from network node environments to share files in the vast P2P network environment is a challenging job. Many researches have proposed data sharing mechanisms and scheduling methods in P2P environments, however, most focused on the efficient utilization of network bandwidth, using greedy methods to deliver the data to the client end as early as possible. However,...
Video-on-demand service in wireless networks is one important step to achieving the goal of providing video services anywhere anytime. Typically, carrier mobile networks are used to deliver videos wirelessly. Since every video stream comes from the base station, regardless of what bandwidth sharing techniques are being utilized, the media stream system is still limited by the network capacity of the...
Due to their widespread popularity, peer-to-peer (P2P) live streaming systems have become a great challenge for Internet service providers (ISPs) as they consume huge amount of Internet bandwidth. By observing that different users may watch a channel with different window sizes, we propose a cooperative scheme called partial participation scheme (PPS) in which different peers request a video stream...
The emerging scalable video coding extension in H.264/AVC standard will enable the deployment of video streaming and distribution applications in heterogeneous environments, with different user bandwidth resources and display capacities. In this paper, we study the problem of how to distribute scalable coded media objects from a media distribution server in peer-to-peer based IPTV applications. All...
The investigation around the use of peer-to-peer in IPTV environments goes on. The debate about the best compromise between the cost reduction offered by the peer-to-peer (P2P) approach and the quality requirements by the mass market is still open. Though some successful protocols are already worldwide used, there are still issues and optimization problems to solve. The main contribution of this work...
We consider a server that simultaneously streams multiple video channels. Each video channel is delivered to a set of receivers using peer-to-peer (P2P) live multicast. We propose a framework for allocating server bandwidth to minimize distortion across the peer population, across all channels. The optimization problem considers rate, distortion, the audience size, and peer-churn associated with each...
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