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The problem of providing an efficient and low-cost video streaming service over wireless access networks is considered in this work. The usage of multicast content delivery combined with popularity-based video caching, enables to provide video-on-demand services over wireless networks. In order to tackle the "last mile" bottleneck for video delivery to the home, we propose a content-aware...
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...
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...
Video streaming applications have implementation issues when the transmission rate is much less than the video playback rate. Caching the beginning part of the video in large storage device before playing is a common solution. In this paper, we propose a bandwidth allocation scheme on video content distribution servers. This algorithm is aim to control the server sending rate with efficient bandwidth...
This paper proposes a novel admission control architecture for video-on-demand servers, which provide deterministic guarantees on the maximum delay of video traffic and increase the network resource utilization. The framework take advantage of the fact that stored video streams can be processed off-line to calculate the space and time parameters in order to estimate its effective bandwidth under the...
With the development of innovative network infrastructure and increasing bandwidth availability, live video streaming is emerging as an attractive application for end users and the industry. Due to the heterogeneity in user resources as well as bandwidth fluctuations, we argue that, to provide high quality-of-service, it is desirable to tailor (on-the-fly) the bit rate of video streams, according...
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...
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...
With the rapid development of video streaming era, multipath video streaming comes as a promising solution. However, dividing the video into different sub-streams is still considered as an important challenge for researchers. In this paper, we propose an approach for generating multiple complementary descriptions of the video flow, then to couple these descriptions with the path diversity provided...
A new genre of P2P systems, P2P Video-on-Demand (P2P-VoD), has not only received substantial recent research attention, but also been implemented and deployed with success in large-scale real-world streaming systems, such as PPLive. The essential characterization of P2P-VoD systems is to take full advantage of peer upload bandwidth contribution with a cache on each peer. Meanwhile, the asynchronous...
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...
Due to the heterogeneous structure of networks, video streaming over lossy IP networks is very important issues. Infrastructure of the Internet exhibits variable bandwidths, delays, congestions and time-varying packet losses. Video streaming applications should not only have a good end-to-end transport performance but also have a robust rate control, because of variable attributes of the Internet...
In order to guarantee continuous delivery of video streaming over best-effort (BE) forwarding network, some quality-of-service (QoS) strategies such as RSVP and DiffServ must be used to improve the transmission performance. However, these methods are too difficult to be employed in practical applications since their technical complexity. In this paper, we design and implement an efficient local bandwidth...
Many multicast video streaming algorithms have been proposed to provide scalable streaming media services, but they are designed for homogeneous clients, i.e., users are assumed to have the same receiving bandwidth. The performance of these state-of-the-art algorithms will degrade significantly in user heterogeneous environment. A scheme, called the enhanced patching, is proposed to support user heterogeneity...
We consider the general scenario where content hosted by the server comprises streams and each peer can subscribe one or more streams. Multiple multicast trees are built to deliver the streams to respective peers while exploiting the overlap of their interests for efficient and scalable delivery. We propose an optimization framework for allocating server bandwidth to minimize distortion across the...
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