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Improving Data Accessibility and Query Delay in Cluster based Cooperative Caching 'CBCC' in MANET using LFUMIN

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Author(s): Madhavarao Boddu | K. Suresh Joseph

Journal: International Journal of Computer Applications
ISSN 0975-8887

Volume: 21;
Issue: 9;
Start page: 37;
Date: 2011;
Original page

Keywords: Adhoc Networks | cache replacement | clustering | cooperative caching | Prefetching | omnet++

ABSTRACT
In order to improve data accessibility and reduce query delay in MANETs, cooperative caching approach is adapted in. So far, cache replacement algorithms like LRU, LFU, and LRUMIN are used to reduce query delay and improve data accessibility in cluster based cooperative caching 'CBCC' in MANETs. But LRU, LFU and LRUMIN have its limitations: They have a high overhead cost of moving cache blocks into the most recently used position each time when a cache block is accessed and further they do not exploit the frequency information of memory accesses. In this paper, we give an overview of caching policies designed specifically for Web objects and provide a new algorithm of our own to address these issues. This new algorithm can be regarded as a LFUMIN algorithm. We examine the performance of this and other replacement algorithms via omnet++ simulation environment. Simulation results shows that the proposed LFUMIN enhances the performance of cluster based cooperative caching in MANETs when compared with LRU and LFU.
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