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Even though BitTorrent-like file sharing is successful for P2P (peer-to-peer) content-sharing over Internet, it suffers from the content unavailability problem when the contents are not popular (i.e., the absence of seed). This content unavailability can be mitigated by using multi-swarm cooperation and/or by bundling popular/unpopular contents. In this paper, by employing user-driven virtualized...
In spite of its success, BitTorrent is facing a content unavailability problem where peers can not finish their content download due to an absence of seeders. Although some approaches have been proposed to improve the content availability, the prior conditions such as a downloaded content and a set of related contents to be bundled limit their application scopes. Our main contribution is a multi-swarm...
Natural sharing of informative media contents is a key service in collaborative and smart work that flexibly conducts remote operations and communicates with remote co-workers in home offices and smart work centers. For collaborative and smart work, we need to carefully disseminate media services tailored for each participating site in order to naturally exchange shared contents between participants...
As the importance of service availability is increasing, we need to reflect the service availability when we build service overlay networks. With this requirement, we also have to achieve two goals for service providers and users: maximization of service provider's revenue and guarantee of service availability of user service requests. For this, in this paper, we propose B-Greedy (service availability-Bounded...
Chord is a scalable peer-to-peer (P2P) lookup protocol that solves the problem of efficiently locating nodes with designed data items. However, Chord is known to be limited in routing efficiency since all nodes are placed on the overlay without taking into account the underlying network topology. In this paper, we introduce AChord, a topology-aware version of Chord that utilizes anycast, along with...
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