Abstract
Location dependent information services (LDISs) are gaining increasing popularity in recent years. Due to limited client power and intermittent connectivity, caching is an important approach to improve the performance of LDISs. In this paper, we propose a new replacement policy called location dependent cooperative caching (LDCC). Unlike existing location dependent cache replacement policies, the LDCC strategy applies a prediction model to approximate client movement behaviors and a probabilistic transition model to analyze the communication cost, resulting in a fully improvement of overall performance. Simulation results demonstrate that the proposed strategy significantly outperforms existing policies.
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