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Efficient sharing of content among users in a close area is a challenging problem remaining in smart devices. This paper presents an architecture which allows users in a group to experience the ubiquitous and real -time sharing service of resource like image, video and website address. Our approach is motivated by taking advantage of the novel industrial standard Wi-Fi Direct which allows Wi-Fi terminals...
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...
On providing multimedia streaming services such as live streaming, VoD, server-client model has been used. By the way, server-client model does not provide enough scalability and load concentration problems. Hence, there are several P2P solutions have been emerged. P2P-based streaming service can provide very high scalabilities and accommodate massive number of users simultaneously. In this paper,...
This paper develops analytical models that characterize the behavior of on-demand stored media content delivery using BitTorrent-like protocols. The models capture the effects of different piece selection policies, including Rarest-First, two variants of In-Order, and two probabilistic policies (Portion and Zipf). Our models provide insight into system behavior and help explain the sluggishness of...
The peer-to-peer networking technologies and systems provide a rapid and scalable content distribution mechanism for the increasing client population to access an explosive volume of media files on the Internet. Whereas the BitTorrent protocol and its derivatives are the most popular peer-to-peer file sharing applications, this paper proposes the performance measurement and analysis of BitTorrent...
In this issue's Works-In-Progress department has three entries. The first is a request for community participation in a survey on indoor positioning systems for interactive, locative audio applications. The second entry presents a decentralized, peer-to-peer-based approach to cloud file sharing with encryption and data de-duplication. The final entry proposes an architecture for augmenting objects...
Many research activities have been provided to allow Session Initiation Protocol (SIP) based communication in Peer-to-Peer (P2P). We have contributed to these activities by proposing a scalable proxy topology building and routing in P2P SIP network where SIP location service is integrated in proxies that run over peer entities. Therefore as SIP cannot work efficiently through a NAT (Network Address...
In this paper, we propose a P2P-based live streaming system called PcubeCast. Different from conventional P2P systems, PcubeCast utilizes servers to ensure end-user QoS. Thus, the proposed PcubeCast takes advantage of traditional systems: 1) Quality-of-Service(QoS) from client-server systems and 2) scalability and cost reduction from P2P systems. Through the experiments with real-world application...
The number and popularity of applications developed over the Peer-to-Peer (P2P) network paradigm has been growing over the last decade, some of which are dedicated to streaming multimedia content. To deceive traffic shaping mechanisms or improve the security of the communications, these applications generate encrypted traffic or resort to several obfuscation techniques, making it difficult to manage...
Multiplayer Online Games (MOG) in-game advertisements require dynamic delivery of large images for potentially hundreds of concurrent users. We present an approach for a scalable advertisement image delivery mechanism using the BitTorrent Peer-to-Peer (P2P) protocol. Simulations were conducted comparing a client-server model and our proposed model, where each MOG player acts as a P2P node in the overall...
The availability of multimedia contents to be played back while driving constitutes an added value to both drivers and passengers, improving the travel experience. These contents can be already on-board, diffused through broadcast networks or delivered on demand by servers as data streams. Vehicular ad-hoc networks allow envisaging a new way to access multimedia contents based on epidemic data dissemination,...
With the advancement of Internet technologies and the widespread use of mobile devices, the number of users in conferencing services is increasing quickly. A P2PSIP conferencing system and an IP Multimedia Subsystem (IMS) conferencing system have been designed to provide conferencing services. The IMS conferencing system was developed to adapt to a server-based centralized system, while the P2P network,...
Unstructured BitTorrent-like Peer-to-Peer networks have been extensively studied as an important enabling technology for Video-on-Demand. While most studies maintain the pull-based nature of unstructured Peer-to-Peer networks, recent ones are investigating the combination of pull and push operations. The goal of the proposed push/pull protocols is to make more effcient use of the available bandwidth,...
This paper focuses on reducing the Network Address Translator (NAT) traversal-related components of the session establishment delay in peer-to-peer Session Initiation Protocol (P2PSIP) overlays. To reduce the delay, we propose to group the management of different connections so that the (time-consuming) NAT traversal procedures performed for one connection can be reused when establishing other connections...
Due to complicated implementation of IP multicast, application layer multicast has attracted the attention of researchers. Tree overlay has some challenges such as resiliency problems caused by peer churns and also network resources may not be efficiently used. Mesh overlay doesn't have such problems, but has a high delivery latency and overhead caused by pull mechanism. Using a hybrid mesh/tree overlay...
This paper presents the design of a platform for distribution of multimedia content streams supported through innovative techniques, both in terms of media encoding and media distribution. The platform architecture accommodates the use of scalable media coding techniques, including both standard and state of the art research methods (wavelets, multiple description coding), combined with new transport...
Deploying multimedia streaming over IP Multimedia Subsystem (IMS) can enable all kinds of user equipments to enjoy unified streaming service, without considering the differences of heterogeneous accessing methods. The combination of IMS and peer-to-peer (P2P) may help operators (especially telecommunication operators) to provide more scalable multimedia streaming. In this paper, we propose PMSAI,...
As a superior approach for peer-to-peer (P2P) streaming live media, mesh-based overlay has made much success due to its potential scalability and ease of deployment. Peers in mesh streaming systems employ a swarming content delivery mechanism to exchange resources. However, the limited availability of new content heavily affects the quality of delivered stream. Aiming at leveraging and optimizing...
In this paper, we consider Peer-to-Peer Video on- Demand (P2P VoD) systems based on the Bit Torrent file sharing protocol. Since the rarest first policy adopted in the Bit Torrent protocol could not collect all pieces corresponding to a video file by their playback time, we need to develop a new piece selection rule particularly designed for P2P VoDs. In the proposed scheme, we assume the existence...
The objective of Peer-to-Peer Content Delivery Networks is to deliver copyrighted contents to paid clients in an efficient and secure manner. To protect such contents from being distributed to unauthorized peers, Lou and Hwang proposed a proactive content poisoning scheme to restrain an illegal download conducted by unauthorized peers, and a scheme to identify colluders who illegally leak the contents...
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