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Peer-to-peer file sharing applications are major proportion of traffic in Internet. Among P2P file sharing applications, BitTorrent is known to be the most popular system, in which peers can download pieces of file proportional with upload bandwidth shared with others. Therefore, for such a system, bandwidth adjustment is very significant for peers. In this paper we aim at modeling this as a solution...
P2P workflow systems meet the development trend of workflow systems. The running path optimization (the path with the minimum running time which consists of the services discovery time and the task execution time) in full-distribution (decentralized) environments has been a bottleneck restricting the performance of P2P workflow systems. Aiming at this problem, this paper proposes a innovative hybrid...
Peer-to-peer overlay, a more promising topology construction, promotes the development of Application Layer Multicast. There have been many studies on the overlay construction and improve the multicast performance. Most of these studies focused on the building period of overlay network or multicast tree. After the overlay construction is established, it will remains stable unless churn of overlay...
This paper presents a new replica optimal location strategy based on ant colony optimization algorithm. Through the improvement of ant algorithm, it can effectively choose the optimal replica node from a great number of nodes in peer-to-peer (P2P) system, which will help to realize the global optimization. The strategy fully considers that P2P nodes are heterogeneous, so the replica of a high degree...
Peer-to-peer live streaming systems allow a bandwidth-constrained source to broadcast a video feed to a large number of users. In addition, a design with high link utilization can achieve high stream rates, supporting high-quality video. Until now, only tree-based designs have been shown to achieve close-to-optimal rates in real-life conditions, leaving the question open as to the attainable efficiency...
The notion of "superpeer" has been shown to be very effective to increase the scalability of P2P applications. For superpeer systems to work, it is critical to preserve the optimal ratio between the number of superpeers and normal peers participating in the overlay. This requires that peers change dynamically their role (i.e., from su-perpeer to normal peer and vice versa) in the presence...
A distinct trend has emerged that the Internet is used to transport data on a more and more massive scale. Capacity shortage in the backbone networks has become a genuine possibility, which will be more serious with fiber-based access. The problem addressed in this paper is how to conduct massive content distribution efficiently in the future network environment where the capacity limitation can equally...
Application-layer peer-to-peer (P2P) networks are considered to be the most important development for next-generation Internet infrastructure. For these systems to be effective, load balancing among the peers is critical. Most structured P2P systems rely on ID-space partitioning schemes to solve the load imbalance problem and have been known to result in an imbalance factor of ominus(logN) in the...
Of all applications of peer-to-peer systems BitTorrent-like file sharing systems becomes increasingly popular, and form a large portion of traffic on Internet. In such systems, peers should share their upload bandwidth in order to increase their download rates. Consequently, tuning the upload bandwidth, a costly resource, such that provides a desirable download time is one of the main concerns of...
Owing to the increasing research applied to wireless technologies, it is possible to envisage futuristic scenarios where vehicles will be equipped with long-range and point-to-point capable wireless interfaces. Besides, the availability of efficient content replication architectures and well-suited optimization schemes, allow to port actual peer-to-peer (P2P) frameworks to such scenarios. This paper...
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