Abstract

In ad hoc networks, due to frequent network partition, data accessibility is lower than that in conventional fixed networks. In this paper, we solve this problem by replicating data items on mobile hosts. First, we propose three replica allocation methods assuming that each data item is not updated. In these three methods, we take into account the access frequency from mobile hosts to each data item and the status of the network connection. Then, we extend the proposed methods by considering aperiodic updates and integrating user profiles consisting of mobile users'' schedules, access behavior, and read/write patterns. We also show the results of simulation experiments regarding the performance evaluation of our proposed methods

Department(s)

Computer Science

Keywords and Phrases

Ad Hoc Networks; Data Accessibility; Data Communication; Data Replication; Data Update; Mobile Hosts; Mobile Radio; Network Partition; Replica Allocation Methods; Replication Scheme

International Standard Serial Number (ISSN)

1536-1233

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2006 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

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