Caching Technique for Improving Data Retrieval Performance in Mobile Ad Hoc Networks
Journal Title: International Journal of Computer Science and Information Technologies - Year 2010, Vol 1, Issue 4
Abstract
Mobile Ad Hoc Networks (MANETs) provide an attractive solution for networking in the situations where network infrastructure or service subscription is not available. Cooperative caching scheme can improve the accessibility of data objects. In this paper, we proposed a neighbor group data caching scheme called Neighbor Group Data Caching (NGDC) for improving data access efficiency in MANETs. The objective is to improve data availability and access efficiency by collaborating local resources of mobile nodes. cache resolution and cache management are the two problems of cooperative caching. To improve data availability and access efficiency, cooperative caching discovers data sources which induce less communication cost by utilizing neighbor group nodes. For cache management, cooperative caching increases the effective capacity of cooperative caches by minimizing caching duplications within the cooperation zone and accommodating more data varieties.We evaluate the performance of the Neighbor Group Data Caching by using NS2 and compare it with the existing schemes such as Neighbor caching and ZoneCooperative. The experimental results show that the cache hit ratio is increased by about 4%~40% and the average latency is reduced by about 5%~37% compared with other schemes.
Authors and Affiliations
Mrs. K. Shanmugavadivu , Dr M. Madheswaran
Keywords
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