Enhanced-Location-Dependent Caching and Replacement Strategies in Mobile Environment
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.
Keywords: Mobile computing, location-dependent information, cache replacement, cache invalidation, semantic caching
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