期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2011
卷号：8
期号：4
出版社：IJCSI Press
摘要：Mobile computing has developed a lot during recent years. Location dependent services are most popular services that the mobile communications support. Still caching is a critical issue that plays a vital role in improving these services. In this paper, we examine cache invalidation and cache replacement strategies in mobile environment under a geometric model which uses semantic caching. An existing caching efficiency criterion called CEB (Caching Efficiency Based) Scheme has been enhanced in this paper. The new scheme is called Enhanced CEB (E-CEB). The existing replacement schemes such as PA and PAID has also been enhanced to get better throughput. We have conducted a series of simulation experiments to study the performance of the algorithm. The experimental results show that the new criteria are effective.
