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This paper proposes a peer-to-peer video streaming delivery system within the framework of next generation networks using application level multicast. Increased efficiency and reliability is achieved in two ways. First, the system uses path diversity by splitting the video traffic in several stripes and distributing each stripe via different multicast trees. Second, the proposed architecture lies...
Free riders in the peer-to-peer (P2P) networks are nodes that only consume services but provide little or nothing in return. They seriously degrade the fault-tolerance, scalability and content availability of the P2P systems. The solution to free riding problem in P2P networks is to have incentive mechanisms that aim to improve the network utility by influencing the nodes to be more cooperative. This...
Though widely accepted as a key building block for next-generation large scale decentralized systems, the lack of flexibility of DHTs on efficient non identifier-based lookups is a well-known problem. In this paper, a resource discovery service that tackles the issues identified in a decentralized and distributed DHT-based caching architecture for media content distribution is presented. In the proposed...
This paper introduces a generic publish-subscribe protocol, that works both for the unstructured and DHT-based peer-to-peer networks. Unlike most of the approaches, it does not rely on the overlay-specific features of the routing algorithms for the efficient multicast topology structure creation and maintenance. Moreover it is highly customizable to address the optimization issues and support different...
Peer-to-peer networks are an increasingly popular solution for the distribution of media content to a large number of users, with limited investments for network infrastructures. The distribution of a real time video stream imposes strict performance requirements such as small playback delays and few frame losses. However, performances are greatly affected by the upload bandwidth of the access networks...
At the present time there are many Peer-to-Peer (P2P) multicasting systems supporting live streaming, i.e. real-time dissemination of various content issued at a source node towards a set of receivers. The objective of content distributing can be twofold: maximization of the system throughput (i.e. the streaming rate) and minimization of the streaming cost while guaranteeing the particular streaming...
With the rapid development of the information technology and knowledge economy, the old fashioned, traditional service industry manage to make a significant progress to grow into a brand new formation. Now the information amount on the Internet expands in a incredible way everyday, which makes how to keep and manage those information of a mass storage system more and more important for us. So in this...
Recently, several mesh-based P2P live streaming systems are adopting a push-pull mechanism instead of the classical pull mechanism. A push-pull mechanism is more efficient in terms of overhead and leads to much better playback delay performance because it eliminates the need of the three steps of pull content retrieval: buffer map broadcast, data request and data sending. Thus, using the pull mechanism...
This Paper introduces a new model of P2P streaming media broadcasting system-PPSLS (P2P Streaming Live System) which adopts a kind of hybrid structure which comprises the advantages of Tree model and Mesh model structure. The PPSLS exploits the advantage of easy controlling the nodes of the multicast tree based on the Tree model structure. At the same time, it also combines the method of using multiple...
Peer-to-peer (P2P) systems provide a scalable way to stream content to multiple receivers over the Internet and has become a major type of application traffic. The maximum rate achievable by all receivers is the capacity of a P2P streaming session. We provide a taxonomy of the problem formulations. In each formulation, computing P2P streaming capacity requires the computation of an optimal set of...
With the rapid development of broadband networks and multimedia technologies, P2P video-on-demand service is increasingly gaining popularity over the past few years. However, little work has been done on an important design issue for P2P video-on-demand systems, i.e., determining the maximal service capacity of a system. In this paper, we first propose an optimal rate allocation scheme to maximize...
In a P2P network, it is common that data items are replicated on multiple peers for improving data availability. In such an environment, when a data item is updated on a particular peer, the update should be immediately propagated to other peers holding its replicas. However, in some applications, some replica holders do not need the update when the degree of change in the update is small. In this...
Mesh-based peer-to-peer (P2P) streaming has proven to be a robust and scalable way for delivering live video streams over the Internet. In this paper, we study how to optimize overlay in a contribution aware manner. We have designed a suite of protocols to construct and optimize the overlay. Our core idea is to promote nodes with larger contribution closer to the source node so as to keep a compact...
Peer to peer (P2P) online game systems have garnered attention recently. This paper presents an online game protocol based on the lockstep protocol and the Byzantine agreement algorithm. The former prevents dishonest actions called time-cheats in a peer to peer (P2P) network. The latter disables Byzantine cheats, with actions resembling the Byzantine fault. Using this protocol, a game can be continued...
This paper presents an algorithm to perform the broadcasting of a packet to all the peers that are located into a convex region (Area of Interest) in a Voronoi based peer-to-peer network. The proposed algorithm is an advanced version of the compass routing algorithm, and it is able to guarantee the delivery of 100% of the packets, while minimizing the total number of packets that travel the network...
Layered streaming is an effective solution to address receiver heterogeneity in a peer-to-peer (P2P) network. This paper addresses the problem of rate allocation for layered video stream in p2p mesh networks. We present a distributed rate allocation algorithm that achieves close to optimal layer allocation among peers receiving the same video. We use load balancing technique that evenly distributes...
This paper presents QuoCast, a resource-aware protocol for reliable stream diffusion in unreliable environments, where processes may crash and communication links may lose messages. QuoCast is resource-aware in the sense that it takes into account memory, CPU, and bandwidth constraints. Memory constraints are captured by the limited knowledge each process has of its neighborhood. CPU and bandwidth...
We propose Streamline, a two-layered architecture designed for media streaming in overlay networks. The first layer is a generic, customizable and lightweight protocol which is able to construct and maintain different types of meshes, exhibiting different properties. We discuss two types of overlay networks and explain how the first layer protocol builds these networks in a distributed manner. The...
A peer-to-peer (P2P) technology is applied for various systems because it enables to construct a system with high scalability and robustness. We have proposed a distributed cooperative storage system that can construct huge storage space by providing it on a P2P network. The storage system is based on an overlay network construction, and its hash space is created in an application layer. Each peer...
Supporting user interactivity in peer-to-peer streaming systems is challenging. VCR-like operations, such as random seek, pause, fast forward and rewind, require timely P2P overlay topology adjustment and appropriate bandwidth resource re-allocation. If not handled properly, the dynamics caused by user interactivity may severely deteriorate users' perceived video quality, e.g., longer start-up delay,...
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