| ON-CRP：机会网络缓存替换策略研究 |
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| 引用本文： | 叶 晖,陈志刚,赵 明. ON-CRP：机会网络缓存替换策略研究[J]. 通信学报, 2010, 31(5): 99-107 |
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| 作者姓名： | 叶 晖 陈志刚 赵 明 |
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| 作者单位： | 中南大学,信息科学与工程学院,湖南,长沙,410083 |
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| 基金项目： | 中国人民解放军总装备部基金资助项目，国家自然科学基金，中国博士后科学基金 |
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| 摘 要： | 提出了一种新的机会网络缓存替换策略(ON-CRP,opportunistic networking cache replacement policy).与现有策略不同,该策略基于节点与数据项的相关度来选择要替换的缓存数据,并利用人类移动模式提取了目标地址匹配概率这一关键因素来对相关度进行判定;同时结合数据项的访问与更新频率比值这一重要因素来对缓存数据替换标准进行设计.仿真实验结果表明ON-CRP能够有效降低数据的远程访问延迟,与其他缓存替换算法相比网络开销降低了约30%,而数据的缓存命中率性能有约10%～30%的提高.
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| 关 键 词： | 机会网络 移动自组网 缓存命中率 数据延迟 |
ON-CRP:cache replacement policy for opportunistic networks |
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| YE Hui,CHEN Zhi-gang,ZHAO Ming. ON-CRP:cache replacement policy for opportunistic networks[J]. Journal on Communications, 2010, 31(5): 99-107 |
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| Authors: | YE Hui CHEN Zhi-gang ZHAO Ming |
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| Affiliation: | YE Hui,CHEN Zhi-gang,ZHAO Ming (School of Information Science , Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | A novel cache replacement policy was proposed,which referred as ON-CRP(opportunistic networking cache replacement policy).Differing from most of existing policies,ON-CRP choosed the data item to replace based on the correlation between the nodes and the item.It utilized the probability of destination-matching to judge the correlation which was gotten from humans' mobile patterns.Moreover,the visit and update frequency ratio was used to design the standard of cache data replacement.The simulation results sho... |
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| Keywords: | opportunistic networks MANET cache hit ratio data latency |
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