Replica allocation for correlated data items in ad hoc sensor networks

Authors:
Takahiro Hara;Norishige Murakami;Shojiro Nishio
Affiliations:
Osaka University;Osaka University;Osaka University
Venue:
ACM SIGMOD Record
Year:
2004

Citing 9
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Abstract

To improve data accessibility in ad hoc networks, in our previous work we proposed three methods of replicating data items by considering the data access frequencies from mobile nodes to each data item and the network topology. In this paper, we extend our previously proposed methods to consider the correlation among data items. Under these extended methods, the data priority of each data item is de-fined based on the correlation among data items, and data items are replicated at mobile nodes with the data priority. We employ simulations to show that the extended methods are more efficient than the original ones.