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Nowadays airborne network is becoming more and more complex. Traditional centralized or weakly distributed network managing solution could not quite fit the complex network for the lack of bandwidth efficiency. Recently, strongly distributed and cooperative network managements have emerged, which could achieve a better performance. However, they have a much higher requirement on managers, and it is...
In this paper, a novel P2P network model for cloud computing is proposed to prevent the "calculation capacity" from being controlled by a few tycoons. The common users can become a part of "cloud" by joining as nodes. To solve "free-ride" and "the tragedy of commons" arising from p2p network model, "cloud" is divided into many clusters, and the incentive...
Video streaming with Peer to Peer (P2P) architecture appears to be an interesting solution for efficient streaming in the heterogeneous scenario of Internet applications. One of the key aspects in a peer-to-peer video broadcast system is to organize the peers into a high quality overlay for disseminating the video stream in order to optimize the bandwidth capacity of the P2P system. This work proposes...
Emergence of peer-to-peer (P2P) networks has provided a new dimension to overlay networks. People can help each other by sharing the contents of which other people may not have strength to purchase. Besides these generous peers, there are some other peers who always try to harm the network by providing harmful data or just block the activities with invalid responses and dropping lookup queries to...
Given the high demand for Peer to Peer applications (P2P), it becomes essential to develop an architecture to operate this type of network to use efficiently the bandwidth and minimize the existing overhead for the maintenance of its topology. Among the existing architectures for P2P networks, the Chord is notable for possessing a powerful search system, but on the other hand it has a high overhead...
Due to the recent spread of streaming delivery of movies, streaming using Peer-to-Peer (P2P) streaming technology has attracted much attention. In P2P streaming systems, to distribute the network load, peers from which the user receives data is selected at random. For this, clients have to wait until their desired data is delivered. Therefore, there are many researches to reduce the waiting time....
The heterogeneous nature of Peer-to-Peer (P2P) networks can be exploited to optimize a wide range of applications. But this requires an accurate characterization of peer heterogeneity, which is difficult due to huge population and disparate properties of individuals. To overcome this barrier, we conduct a thorough inspection of peer heterogeneity in terms of individual churn and resource capacity...
Higher performance of digital earth system is still demanded in order to always guarantee high quality service especially while large-scale network users request intensive data such as 3d city model with fine texture in large scene. This paper aims at extracting information from user's behavior to guide prefetch which can help enhance service capacity of digital earth platform. We put forward three...
The Peer-to-peer (P2P) computing has been one of the emerging technologies, particularly contributing in distributed file sharing. Experimental studies show that for a file download, network congestion or service capacity fluctuation takes minutes to several hours. For a P2P one of the fundamental performances metric is the average download time. The common approach to analyse the average download...
Peer to Peer (P2P) live streaming is relatively new paradigm that aims for streaming live video to large number of clients with low cost. Many such applications allready exist in the market, but, prior to creating such system it is necessary to analyze its performance via representative model that can provide good insight in system's behavior. Modeling and performance analysis of P2P live video streaming...
p-Cycles offer a protection that corresponds to an efficient pre-configured and pre-cross-connected protection scheme. Thereafter, we study the stability and the efficient reconfiguration of p-cycles in the context of dynamic asymmetric traffic. The literature acknowledges it as a difficult problem, but which is of paramount importance in the selection of p-cycles as a protection scheme in Intelligent...
To address the selfishness issue in application-layer multicast, we present a selfishness-aware application-layer multicast (SAM). SAM defines an altruism value for each node associative to its contributions to the system. Nodes are first partitioned into topologically-aware clusters using the binning scheme. Within the cluster, the subtree is constructed to place the nodes with greater altruism value...
P2P applications impose an enormous traffic load on the Internet. Actually, however, topological difference between P2P network and underlying physical network (Internet network) is creating inefficient use of the physical network resources. To this problem, we propose P2P download control methods using router network parameters (e.g., number of router-hops, TCP window size and RTT) that can achieve...
One recent approach to build highly scalable and robust networked virtual environments (NVEs) is by using peer-to-peer overlay networks. Voronoi-based Overlay Network (VON) has been proposed that promises to maintain high overlay topology consistency in a bandwidth-efficient manner. VoroCast constructs a spanning tree across all AOI neighbors based on Voronoi diagrams, while FiboCast dynamically adjusts...
With the extensive using P2P networks, P2P data stream occupied more and more bandwidth, it will affect the performance of the entire Internet. This paper studies the P2P nodes which exchange traffic disorder, through introducing XCP congestion control protocol, designs network region-based exchange unit and flow control strategy to achieve flow control. The simulation results show that the flow control...
In this decade, peer-to-peer (P2P) applications have emerged as popular tools for sharing data and they have gained much attention. Such P2P applications build overlay networks on top of existing infrastructure networks and disseminate data in a peer-to-peer manner. How well the P2P overlay network maps onto the underlying physical network topology can significantly impact P2P application performances...
Reducing server's bandwidth pressure is one of the key problems in the designing of peer-to-peer video-on-demand system. In this paper, we analysis and model this problem via using the “pseudo sequence scheduling”, which is widely used by many peer-to-peer video-on-demand systems. We reveal the relations between the server bandwidth consumption, the cache size and the join speed of peers. This result...
Locality-awareness is considered as a promising approach to increase the efficiency of content distribution by peer-to-peer (P2P) networks, e.g., BitTorrent. It is intended to reduce the inter-domain traffic which is costly for Internet service providers (ISPs) and simultaneously increase the performance from the viewpoint of the P2P users, i.e, shorten download times. This win-win situation should...
Many P2P systems have been designed without taking into account an important factor: a large fraction of Internet users nowadays are located behind a network address translator (NAT) or a firewall, making them unable to accept incoming connections (i.e. unconnectable). Peers suffering from this limitation cannot fully enjoy the advantages offered by the P2P architecture and thus they are likely to...
The decentralized structure makes P2P network an effective model for file sharing. However, how to avoid the ??free-rider?? of file sharing in P2P network is a crucial problem. With the combination of fairness thought, an incentive strategy based on peer trust degree has been proposed. Each peer in this model is a credit entity. Each node submits feedback about queried node after transaction, and...
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