期刊名称：International Journal of Advanced Networking and Applications
电子版ISSN：0975-0290
出版年度：2010
卷号：2
期号：1
页码：428-436
出版社：Eswar Publications
摘要：Broadcast Queries (BQs) refer to spatial queries whose answers rely on the location o f the inquirer. Efficient processing of BQs is of critical importance with the ever-increasing deployment and use of mobile technologies. Novel approach is based on peer-to-peer sharing, which enables us to process queries witho ut delay at a mobile host by using query results cached in its neighboring mobile peers. We design and evaluate cooperative caching techniq ues to efficiently support data access in ad hoc networks. We first propose two schemes: Cache Data, which caches the data, and Cache Path, which caches the data path. After analyzing the performance of those two schemes, we propose a hybrid approach (Hybrid Cache), which can further improve the performance by taking advantage of Cache Data and Cache Path while avoiding their weaknesses. Cache replacement policies are also studied to further improve the performance. Simulation results show that the proposed schemes can significantly reduce the query delay and message co mplexity when compared to other caching schemes
关键词：Ad hoc networks; Cooperative cache; Cache management; Cache replacement policy
