A Replication Scheme Based on Clustering and Time Indexing for Ensuring Consistent Data Availability in Mobile Adhoc Networks

Chandrakala, C B and Prema, KV and Hareesha, K S (2015) A Replication Scheme Based on Clustering and Time Indexing for Ensuring Consistent Data Availability in Mobile Adhoc Networks. International Journal of Information Processing, 9 (1). pp. 38-47. ISSN 0973-8215

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Abstract

The mobile ad-hoc networks (MANETs) are decentralized network with resource constrained and mobile nodes. This characteristics of MANETS has a direct impact on the data availability. Replication has been used as one technique to improve the data availability both in MANETs and fixed networks [1][2]. Data replication has an impact on the network resource utilization. In this paper, we propose a replica allocation scheme to reduce the communication cost while maintaining high consistent data availability. The proposed scheme builds group of 1-hop cluster of nodes in the network. One node in each cluster plays a role of a replica allocator for replica allocation based on the data access frequencies that are computed periodically. The provision of recent data on demand basis is based on Time indexing approach. We evaluate the proposed scheme by simulations using the network simulator NS-2. The results of simulations showed significance reduction in the communication cost in comparison with the existing replica allocation scheme (SAF and DCG) and the method exhibited improvement in the data availability with the increase in the number of users in the network in par with DCG.

Item Type: Article
Subjects: Engineering > MIT Manipal > Computer Science and Engineering
Engineering > MIT Manipal > Information and Communication Technology
Engineering > MIT Manipal > MCA
Depositing User: MIT Library
Date Deposited: 25 May 2016 11:48
Last Modified: 25 May 2016 11:48
URI: http://eprints.manipal.edu/id/eprint/146127

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