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This paper characterizes a recently proposed anonymous file sharing system, OneSwarm. This characterisation is based on measurement of several aspects of the OneSwarm system such as the nature of the shared and searched content and the geolocation and number of users. Our findings indicate that, as opposed to common belief, there is no significant difference in downloaded content between this system...
In this paper, we present MIRA, a new middleware for robotic applications. It is designed for use in real-world applications and for research and teaching. In comparison to many other existing middlewares, MIRA employs novel techniques for communication that are described in this paper. Moreover, we present benchmarks that analyze the performance of the most commonly used middlewares ROS, Yarp, LCM,...
Solutions to the cellular network bandwidth problem have been presented by the community such as usage of alternative wireless (e.g., 802.11 WiFi) network and peer-to-peer (P2P) file sharing over a group of wireless devices. However, often the theoretical and simulation approaches for file sharing within multi-radio P2P groups hide the complexity of systems and networks in real scenarios such as heterogeneity...
Considering that audiovisual services will highly impact network architecture in the coming year, we check the impact of the traffic growth from several traffic evolution paths. Some optimization scenarios are proposed and compared looking at the Total Cost of Ownership and the network dimensioning. We show that depending on the context, flattening IP hierarchical network, bypassing transit routers...
A peer-to-peer (P2P) file sharing system provides a platform that enables users to share their files. Retrieving files efficiently and trustworthily in such a large and jumbled system is critically important. However, the issues of efficient searching and trustworthy searching have only been studied separately. Simply combining two separate strategies dealing with each issue doubles system overhead...
One highly-scalable approach to content delivery is to harness the upload bandwidth of the clients. Peer-assisted content delivery systems have been shown to effectively offload the servers of popular files, as the request rates of popular content enable the formation of self-sustaining torrents, where the entire content of the file is available among the peers themselves. However, for less popular...
Lately, access loads on servers and network traffic are increasing due to larger content-size and higher request-frequency in content distribution networks. Breadcrumbs (an architecture with guidance information for locating a content cache) is designed to reduce server-loads and to form content oriented network autonomously in cooperation with cached contents. We also proposed Breadcrumbs+ which...
Active network measurements play an important role not only in network monitoring for OAM purposes, but also in assessing the current network status and providing real-time information for the optimization of applications. This paper proposes the extension of SNMP-based monitoring mechanisms to also support active in-network measurements conforming to the standardized OWAMP protocol. A specialized...
the paper first analyzes the basic theory of the CDN (Content Delivery Network) audio and video system and the P2P (peer to peer) audio and video system, and presents its own limitations of each kind of the architecture. Then a hybrid model has been proposed, which integrates CDN and P2P to build the audio and video public network platform. The paper describes the architecture of the hybrid model,...
Using a decentralized content distribution scheme is appealing when considering the potentially enormous amount of data generated by high quality video on demand (VoD) services. There is, unfortunately, little information available about which form of content delivery would yield maximum benefit and how it should be configured to achieve that, given a certain cost structure and request distribution...
Various peer-to-peer architectures for Massively Multiplayer Online Games have been proposed in the last decade in an attempt to reduce host server traffic and processing requirements. This paper proposes a middleware plugin that will transform the game's network into a hybrid model in an attempt to distribute a portion of server tasks amongst the client machines. The middleware will appear as transparent...
In this paper, aiming to reduce cellular network load, we propose a cooperative download method by which user terminals exchange fragments of a content called chunks through short-range wireless communication like Bluetooth or Wi-Fi with other user terminals who want the same content. In order to reduce the cellular network load, it is necessary to receive as many chunks as possible via short-range...
Content addressing and localization are basic issues in the structure of content-centric networks. This paper presents the implementation and performance evaluation of the Content Registry (CR), developed within the framework of the FIE (Future Internet Engineering) project to meet the requirements of the PI CAN network. The CR allows to find the desired Content Record (containing basic transmission...
A novel Internet content distribution service Offline downloading service has emerged recently and attracted a large number of users all over the world. Unlike traditional Internet content distribution systems such as Bittorrent (BT), Offline downloading service uses dedicated cloud unities (Cache cloud) to store files what users wish to download and provide uploading, in order to guarantee file availability...
With the development of computer science and virtual reality technology, virtual world evolves along the way of computer game development, from arcade games, console system games, LAN games, Internet connectivity games, unstructured games, games with player generation of content, worlds with designer-provided objectives, games with social networks, and open virtual worlds [1]. Traditional server-client...
Sharing data between autonomous and possibly heterogeneous decentralized systems on the Web gave rise to the concept of P2P database systems. In this paper, we propose a deadlock managing process for distributed and replicated database in P2P based on quorum system. This process is fully decentralized because each client decides if it has the priority to write access.
While there are several ways for video finding in UGC (user generated content) video dystems, video search is still the number one source of video views in aggregation. In this paper, we propose to use peer-assisted search to alleviate the server burden caused by video search. To this end, we have measured and analyzed You Ku, the largest UGC video system in China. With a large dataset, we have found...
By analyzing the peer classification, structure, and configuration of juxtapose framework (JXTA), a mixed topology in a campus network environment is designed and implemented for peer-to-peer instant communication. A novel method of transmitting video data on JXTA overlap network is proposed, by which video can be included in JXTA applications. The feasibility is proved, furthermore, the performance...
This article aims to discuss the replication principle that underlies correlations between peer-network conditions and video quality impacts over unstructured peer-to-peer (P2P) video-on-demand (VoD) overlay networks. In particular, the conditions of a network path among peers, such as communication latencies, packet buffer status, and upload bandwidth, can be used to develop failover mechanisms that...
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