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Overlay multicast is an effective approach to the problem of streaming distribution. Other approaches proposed for streaming, i.e., unicast transmission and IP multicast have several drawbacks. The former method is not scalable with the growing number of users. The latter method - IP multicast - requires strong cooperation with ISPs (Internet Service Providers) what is not always realizable due to...
Both ambient intelligence and wearable computing do need novel hardware and software, yet another enabling factor is middleware, which should be highly capable, flexible and efficient, allowing for the reuse of existing pervasive applications when developing new ones. In the considered application domain, middleware should also support quick runtime re-configuration of systems, interoperability among...
The current work deals with the problem of resource management in P2P networks. The topological properties of the overlay network are critical factors that dominate the performance of P2P networks. The inverse Kautz digraph is a good topology to construct the overlay network. We discuss an efficient DHT-based overlay network (MREIK) with Byzantine fault tolerance. MREIK based on many rings which embeds...
Concepts of network virtualization and overlays are nowadays gaining much popularity and are perceived as key approaches for future Internet. One of possible applications used in overlay networks is live streaming based on Peer-to-Peer (P2P) multicasting. This paper deals with the problem of overlay networks dimensioning. In the problem-formulated as an Integer Program - access link capacities are...
Each peer has to obtain information on objects distributed in networks by itself through communicating with its acquaintance peers. An acquaintance might hold obsolete, even incorrect information on objects due to the propagation delay of changed information on the object and faults of peers. It is critical to discuss how a peer can trust acquaintances. We discuss subjective and objective types of...
Mobile Ad hoc NETworks (MANET) and Peer-To-Peer (P2P) systems are emerging technologies sharing a common underlying decentralized networking paradigm. However, the related research activities have been mainly developed by different research communities, nullifying therefore the idea of an unitary approach able to assure effectiveness integrated solutions. In this paper, we propose a DHT-based routing...
To solve the non-transitive connectivity (NTC) problem which existing widely in networks, this paper proposes a method to solve the NTC problem in overlay network by using uncertainty DHT to establish structured network. Through relieving the relationship between node ID of bottom layer and position of logical space, it will avoid the effect of NTC node to network structure, at the same time using...
Recently, clustered overlays in which peers are grouped based on the similarity of their content or interests have been proposed to improve performance in peer-to-peer systems. Since such systems are highly dynamic, the overlay network needs to be updated frequently to cope with changes. In this paper, we introduce an approach for updating a clustered overlay based on local decisions made by individual...
Current state management practices heavily rely on centralized architectures that pose scalability bottleneck and are expensive to adopt and deploy. In this paper, large scale state management issues are considered and addressed from design perspectives. The intra zonal communication strategies presented in [2][5] assume that peer knows its position in the global coordinate system. In this work, we...
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