August 2011
Intermediate to advanced
216 pages
6h 58m
English
Content preview from Peer-to-Peer Computing
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Incentives 115
results also suggest that the proposed scheme, compared with a simple always-
request one, increases the utility and lifetime of every client while reducing
the number of requests sent, at the cost of slightly larger average query delay.
They also compared the performance of the proposed scheme with two popular
schemes that employ client caching. The simulation results show that caching
only benefits clients with high query rates while resulting in both shorter
lifetime and smaller utility in other clients.
5.3.3 Network Access Sharing
Efstathiou and Polyzos [Efstathiou and Polyzos, 2003] studied the problem
of building a federation of wireless networks using a fully auto nomous P2P
approach. Specifically, in their system model, there
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