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Distributed Denial of Service attacks of today present a difficult challenge to the network administrators as well as to the users of the Internet. Distributed Denial of Service war field launched by hackers using malicious botnets are evolving day by day. As new countermeasures are developed or mitigate Distributed Denial of Service attacks, attackers are constantly developing new methods to circumvent...
Most home computers have upload bandwidths that do not allow them to stream good quality video. As a result, they cannot fully participate in peer-to-peer video streaming solutions. We propose to address that issue by letting these clients use the storage space they have on one or more remote servers. Each time a client plays a streaming video, it will upload a copy of that video to one of these servers...
Using Peer-to-Peer (P2P) overlay networks have become a progressively popular approach for streaming live media over the Internet due to their deployment simplicity and scalability. In this paper, we propose a new hybrid push-pull live P2P video streaming protocol called PPM that combines the benefits of pull and push mechanisms for video delivery. Our main goal is to minimize the network end-to-end...
Vehicular network is different from wired network due to its network environment changes rapidly. The connection lifetime between vehicles is usually short because vehicles move in high speeds. Hence, deploy peer-to-peer (p2p) applications over vehicular network is a challenging research issue. There are many problems confronted in p2p file sharing, e.g. how to search files effectively, how to share...
Small playback lag in live streaming is important for time-critical and interactive applications such as live stock, market updates, sports and remote education. In this paper, we present Elite addresses the playback lag problem in peer-assisted live streaming systems. Instead of deploying a large initial offset to all the users, Elite seeks the possibility of initializing users with layered proportional...
Co-operative peer-to-peer systems have lot of relevance due to their desirable properties like lack of centralized control and transparency. But in certain applications, the stability of peer-to-peer systems is affected when concentrated load spikes occur. In this work, we explore the case for cloud-assisted peer-to-peer systems to handle spikes using peer-to-peer search as a case study. We identify...
For Internet applications, e.g., video streaming and file download, bandwidth and end-to-end propagation delay are two significant parameters that affect quality of service. The merit of Client-Server data transmission is able to reduce unnecessary end-to-end propagation delay, but additional upload bandwidth is required at the server (original source) side. However, in peer-to-peer (P2P) data transmission,...
We consider a P2P-assisted content storage and delivery system to support a streaming Video-on-Demand (VoD) service. In this system, the peers are part of the service provider (e.g. set-top boxes) with limited storage space. Servers with ample storage and bandwidth are deployed to guarantee the availability and quality, but it is desirable to minimize the server utilization to reduce costs. Based...
The high performance computing (HPC) community has shown tremendous interest in exploring cloud computing as it promises high potential. In this paper, we examine the feasibility, performance, and scalability of production quality scientific and engineering applications of interest to NASA on NASA's cloud computing platform, called Nebula, hosted at Ames Research Center. This work represents the comprehensive...
Traditional Infrastructure-as-a-Service offerings provide customers with large numbers of fixed-size virtual machine (VM) instances with resource allocations that are designed to meet application demands. With application demands varying over time, cloud providers gain efficiencies through resource consolidation and over-commitment. For cloud customers, however, this leads to inefficient use of the...
In Software-as-a-Service (SaaS) cloud delivery model, a hosting center deploys a Virtual Machine (VM) image template on a server on demand. Image templates are usually maintained in a central repository. With geographically dispersed hosting centers, time to transfer a large, often GigaByte sized, template file from the repository faces high latency due to low Internet bandwidth. An architecture that...
New advanced techniques must be developed to support the growth of IPTV services and to boost quality delivered to the consumers. Optimization technique is proposed for the way users access video content delivered via wide area networks. The perceived quality of service will increase because the user accesses video content temporarily stored in nearby geographic locations. Temporary storage for content...
Traditional peer-to-peer live streaming systems usually have one specific streaming rate for one single channel. However, with the terminals diversifying, especially smart mobile phones bursting, the desire for multi-rates from one single channel topology of P2P live streaming becomes urgent, while considering that the network environments and topologies always change momentarily. High rate stream...
In a P2P media streaming system, a centralized tracker server is always used to maintain the topology. However, sometimes the server becomes overloaded when too many clients are coming. Then, the response time is too long because of many frequent VCR operations and the tracker server cannot support large-scale users' requests. In this paper, a distributed tracker organization is designed to solve...
The P2P-assisted video-on-demand (P2P VoD) service has achieved tremendous success among the Internet users. There are three core strategies in the P2P VoD system: the piece selection policy, the peer selection policy as well as the replica management policy. Different from the existing research works that only consider single policy optimization, we for the first time study the existing P2P VoD policies...
Hybrid cloud-P2P content distribution (“CloudP2P”) provides a promising alternative to the conventional cloud-based or peer-to-peer (P2P)-based large-scale content distribution. It addresses the potential limitations of these two conventional approaches while inheriting their advantages. A key strength of CloudP2P lies in the so-called bandwidth multiplier effect: by appropriately allocating a small...
Recently, Peer-to-Peer (P2P) based multi-party video conference systems have been widely deployed. However, those solutions suffer from high cost when multiple users simultaneously distribute video streams to receivers. Most existing systems only support up to a dozen of users at the same time. In this paper, we propose a novel approach to construct and manage a heterogeneous P2P network for scalable...
Rate control for multimedia streaming has been the subject of many recent research activities. In this paper we propose a simple, but optimal technique for rate control that does not require the knowledge of the type of the multimedia data, but only needs that every packet is labeled with a “priority value” that represents the relative importance of the packet. This makes it possible to implement...
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...
Three stakeholders come into play in peer-to-peer (P2P) video-on-demand (VoD), namely peers/viewers, content providers and ISPs. Different design choices have been proposed to improve quality of user experience, to bring down content server bandwidth cost and to reduce ISP-unfriendly traffic. However, it is unclear whether the ability of these design choices to meet interests of one stakeholder comes...
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