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Peer to Peer (P2P) is a collection of peers in which each peer has their own power and responsibility. Peer communicates with other peers for accessing their services. This feature of P2P makes it vulnerable to different type of attacks. Trust and Reputation models can be used to minimize the impact of such threats. Maintaining trust in P2P network is required to enhance secure communication in peer...
Distributed storage systems (DSSs) can provide reliable access to data over individually unreliable nodes for a long period of time. Regenerating codes (RCs) are efficient at both storage and repair bandwidth, and thus are regarded as a promising option for DSSs. In this paper, the generalized RCs (GRCs) are considered, which possess the relaxed conditions on reconstruction sets and regeneration sets...
Exascale networks are expected to comprise a significant part of the total monetary cost and 10-20% of the power budget allocated to exascale systems. Yet, our understanding of current and emerging workloads on these networks is limited. Left ignored, this knowledge gap likely will translate into missed opportunities for (1) improved application performance and (2) decreased power and monetary costs...
Thin-client computing is being adopted by many industries to bring services to users through a unique platform over wide area networks (WAN). To improve thin-client communication sessions, some authors have proposed using the thin-client protocol with enhanced image compression techniques while others have proposed using drawing commands instead. To take full advantage of the capabilities of thin-client...
Buffering mechanisms play a vital role in leveraging the capacity and efficiency of live streaming as well as P2P streaming system. An appropriate buffering mechanism allows the peer to undergo a smooth playback by compensating the delay introduced by the network as well as storing pieces to be played in the near future. A circular buffer is used most of the time in a live P2P streaming system as...
Although many different community detection algorithms have been proposed to detect community structures in complex networks, how to effectively detect community structures is still a great challenge. Seed-centric methods is one of the most effective solutions for community detection. To more, in this paper, we propose a novel density-based seed expansion algorithm, namely, DenSeC, which can easily...
Recently, peer-to-peer (P2P) networking has been proposed to deliver contents efficiently in Distributed Virtual Environments (DVEs) without overloading servers. Due to the nature of the real-time communications in DVEs, peers should carefully select neighbors and content pieces with prioritization in order to achieve the best streaming quality. In this paper, we proposed a prioritization framework...
Peer organization is one of the most important issues in peer-to-peer (P2P) video streaming systems. Free-riding extremely reduces the overall performance of these systems. The peers placed closer to the video source will have a higher quality of service. Therefore, we can mitigate the free-riding effect and encourage peers to increase uploading participation by putting peers with more upload bandwidth...
In current Internet, most of the traffic dedicated to video streaming applications. In recent years, Peer-to-Peer (P2P) streaming approach has gained more attention, due to the high cost of providing the required bandwidth for a large number of users in Client-Server model. Mesh-based peer-to-peer video streaming is a robust approach which recently employed in many multimedia networking applications...
Peer to peer networks offer an extensible framework for supporting video streaming service over the Internet. P2P networks efficiency highly depends on peers' contribution. In practice, some peers only use the service, but share few resources or do not share any resources. This phenomenon is called free riding which seriously affects the P2P networks efficiency. So, in order to encourage the peers...
A flexible data retrieval service is needed in data center networks, where erasure coding has been widely adopted. Elastic Optical Networks, based on Nyquist wavelength division multiplexing or optical orthogonal frequency division multiplexing is an ideal backbone for data centers, since they can efficiently utilize the optical fiber's bandwidth in an elastic manner by partitioning the bandwidth...
Network visualization in Elastic Optical Networks (EONs) utilizes the flexible spectral resources to map Virtual Networks (VN) requests onto the physical substrate network. The process of mapping the VN requests onto the physical substrate network is called Virtual Network Embedding (VNE) problem. The use of EONs in network virtualization brings in an additional requirement of satisfying the spectrum-continuity...
The class of flooding-based DTN routing protocols that leverage (transitive) encounter probabilities have been shown to perform well in selected simulations and scenarios, however they are especially sensitive to heterogeneous mobility models in which some nodes' mobility pattern is on a significantly different timescale than others. In particular, military and disaster response scenarios can exhibit...
Recently, P2PTV is a popular application to deliver video streaming data over Internet network. On the overlay network, P2PTV applications create the logical links between pairs of peers considering round trip time (RTT) without physical network consideration. P2PTV packets are shared over a network without localization awareness which is the serious problem for Internet Service Providers (ISPs)....
With the development of SAR technology, the SAR imaging processing data capability and computation complexity increases greatly. According to the situation, we design a virtual single node (VSN) parallel processing method, which uses 8 TMS320C6678 DSPs as a big processor to realize the large capability distributed storage and short time delay of SAR imaging processing. This method designs a remote...
The paper deals with distributed Kalman filtering over a peer-to-peer sensor network with focus on a data transmission scheduling strategy aiming at reduced communication bandwidth and, consequently, at enhanced energy efficiency and prolonged network lifetime. A novel distributed Kalman filter algorithm with data-driven communication is devised relying on the idea that each node transmit its local...
In this paper, we propose a novel streaming system for content distribution. The study is based on the network environment of two-class hybrid peer-to-peer (P2P) streaming, which includes super peers and ordinary users in the same overlay network. Paper gives the system design and a multiple rates transcoding algorithm to optimize the performances of video quality and system capacity. In the proposed...
Large-scale storage systems often face node failures that lead to data loss. Cooperative regeneration has been extensively studied to minimize the repair traffic of simultaneously reconstructing the lost data of multiple failed nodes. However, existing cooperative regeneration schemes assume that nodes are homogeneous. They do not consider how to minimize the general regenerating cost when taking...
Wireless Mesh Network (WMN)[1] is a group of wireless devices that has function to transfer all data over wireless channel and it is able to self-organized, self-configure network path itself by optimize routing protocol over Layer 2 (MAC Layer). The WMN can be installed by using computer or device with interface base on IEEE 802.11 forming to the WMN. This network can provide services with any content...
Although Mainline DHT is not an official BitTorrent protocol so far, it's widely used in many BitTorrent clients such as Utorrent, Vuze, BitComet and Xunlei. Despite there are millions of Mainline DHT users, only little research focus on Mainline DHT. In this paper, we present two kinds of measurement results based on crawling Mainline DHT. Firstly, we develop an effective crawler and crawl Mainline...
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