JOURNAL OF COMPUTERS (JCP)
ISSN : 1796-203X
Volume : 3    Issue : 4    Date : April 2008

Multimedia Resource Replication Strategy for a Pervasive Peer-to-Peer Environment
Letian Rong
Page(s): 9-15
Full Text:
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Abstract
The computer world is experiencing a paradigm shift towards context-aware pervasive computing,
where diverse computer devices communicate with each other through different network access
technologies, and allow resource access based on user preferences. P2P computing is an area
which will be affected by this new trend. In this paper, we proposed a resource replication strategy
for context-aware P2P computing in a pervasive environment. The replication strategy takes an
active approach through using the resource request rate as the primary metric to trigger the
replication process, and then adaptively replicate resources into various configuration states
according to the properties of peers (i.e., terminal capabilities and user preferences) and the size of
peer clusters. Also, the strategy uses peer related information stored on super peers to determine
which peers should be selected to perform adaptive replications and where the resulting replicas
should be stored. Simulation results show that the proposed strategy reduces network delays while
increasing resource hit rate in comparison to commercial super peer P2P systems and random
replication strategies.

Index Terms
P2P, pervasive computing, context-aware, replication strategy