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Browsing by Subject "Peer-to-peer networks"

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    A distributed and measurement-based framework against free riding in peer-to-peer networks
    (IEEE, 2004) Karakaya, Murat; Korpeoglu, İbrahim; Ulusoy, Özgür
    In this paper, we propose a distributed and measurement-based method to reduce the degree of free riding in P2P networks. We primarily focus on developing schemes to locate free riders and on determining policies that can be used to take actions against them. Our proposed schemes require each peer to monitor its neighboring peers, make decisions if they exhibit any kind of free riding, and take appropriate actions if required.
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    A peer-to-peer file search and download protocol for wireless ad-hoc networks
    (Elsevier BV, 2009-01) Sözer, H.; Tekkalmaz, M.; Korpeoglu, I.
    Deployment of traditional peer-to-peer file sharing systems on a wireless ad-hoc network introduces several challenges. Information and workload distribution as well as routing are major problems for members of a wireless ad-hoc network, which are only aware of their immediate neighborhood. In this paper, we propose a file sharing system that is able to answer location queries, and also discover and maintain the routing information that is used to transfer files from a source peer to another peer. We present a cross-layer design, where the lookup and routing functionality are unified. The system works according to peer-to-peer principles, distributes the location information of the shared files among the members of the network. The paper includes a sample scenario to make the operations of the system clearer. The performance of the system is evaluated using simulation results and analysis is provided for comparing our approach with a flooding-based, unstructured approach. © 2008 Elsevier B.V. All rights reserved.

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