北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2014, Vol. 37 ›› Issue (3): 67-72.doi: 10.13190/j.jbupt.2014.03.014

• 论文 • 上一篇    下一篇

移动环境中语义缓存一致性维护的Agent方法

梁茹冰1, 刘琼2   

  1. 1. 华南农业大学 理学院, 广州 510642;
    2. 华南理工大学 软件学院, 广州 510006
  • 收稿日期:2013-08-22 出版日期:2014-06-28 发布日期:2014-06-08
  • 作者简介:梁茹冰(1980-),女,讲师,博士,E-mail:liang_ru_bing@163.com.
  • 基金资助:

    国家自然科学基金项目(61171141)

Research on Semantic Cache Consistency Maintenance in Mobile Environments Based on Agent Method

LIANG Ru-bing1, LIU Qiong2   

  1. 1. College of Science, South China Agricultural University, Guangzhou 510642, China;
    2. School of Software Engineering, South China University of Technology, Guangzhou 510006, China
  • Received:2013-08-22 Online:2014-06-28 Published:2014-06-08

摘要:

针对当前语义缓存一致性维护策略难以适应移动终端频繁切换、断接的问题,提出使用移动代理技术来维护语义缓存一致性的方法. 首先,基于SMC-架构设计移动代理MSSAg和MTAg;其次,提出无小区切换和有小区切换2种情况下进行缓存一致性维护的方法. 实验结果表明,所提方法在减少缓存一致性恢复时间和降低网络通信量方面较其他算法有明显的改善,可以有效地在频繁断接、移动和切换的环境中进行语义缓存一致性维护.

关键词: 移动计算, 语义缓存, 切换, 一致性维护, 移动代理

Abstract:

Current semantic cache consistent maintenance strategy is difficult to adapt to frequent mobility, hand off and disconnect network environments. The article propose a new semantic cache scheme using mobile agent technology to maintain the cache consistency. Firstly, mobile agents MSSAg and MTAg are designed based on SMC-architecture. Secondly, the process of maintain cache consistency is discussed in two cases: without hand-off and with hand-off. Experiments show that the proposed cache maintenance method could reduce cache consistency restore time and save data communication cost effectively. It is particularly efficient for using in frequent mobility, hand off and disconnect network environments.

Key words: mobile computing, semantic cache, hand off, consistency maintenance, mobile agent

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