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基于MANET的组间协作缓冲算法
引用本文:钟颖莉,陈莉莉,李金宝,郭龙江.基于MANET的组间协作缓冲算法[J].计算机工程与应用,2009,45(18):139-143.
作者姓名:钟颖莉  陈莉莉  李金宝  郭龙江
作者单位:1.黑龙江大学 计算机科学技术学院,哈尔滨 150080 2.黑龙江省数据库与并行计算重点实验室,哈尔滨 150080 3.联发软件设计有限公司,广东 深圳 518057
基金项目:黑龙江省自然科学基金,黑龙江省教育厅科学技术研究面上项目,黑龙江省自然科学基金面上项目,哈尔滨市青年科技创新人才研究专项资金项目 
摘    要:对MANET环境下的缓冲技术进行了研究,提出了一种组间协作缓冲算法。该算法充分考虑了数据的访问频率,数据缓冲节点到数据源节点的距离、数据的大小和数据的一致性。从缓冲数据的使用角度出发,实现了组间的协作缓冲,使缓冲的数据更合理化,提高了缓冲的命中率。实验证明,提出的算法能显著地减少查询执行的能量消耗,改善查询的平均响应时间。

关 键 词:移动自组网(MANET)  移动数据库  缓冲  组间协作缓冲算法
收稿时间:2009-2-3
修稿时间:2009-4-10  

Cooperative cache algorithm among groups based on MANET
ZHONG Ying-li,CHEN Li-li,LI Jin-bao,GUO Long-jiang.Cooperative cache algorithm among groups based on MANET[J].Computer Engineering and Applications,2009,45(18):139-143.
Authors:ZHONG Ying-li  CHEN Li-li  LI Jin-bao  GUO Long-jiang
Affiliation:1.School of Computer Science and Technology,Heilongjiang University,Harbin 150080,China 2.Key Laboratory of Database and Parallel Computing of Heilongjiang Province,Harbin 150080,China 3.Media Tek Software Design Co.,Ltd.,Shenzhen,Guangdong 518057,China
Abstract:The cache technology in the MANET environment is studied and a cooperative cache algorithm among groups is proposed.Cooperative cache algorithm among groups,which is on the basis of data using,completely considers the data access frequency,the distance from cache node to source node,data size and the data consistency.It realizes data caching among groups,which makes the caching data more reasonable and enhances the hit ratio of cache.The experiment shows that the method proposed in this paper not only remarkably reduces the energy cost of the query but also improves average responding time of queries.
Keywords:Mobile Ad-hoc Networks(MANET)  mobile database  cache  cooperative cache algorithm among groups
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