摘要
随着网络流量的急剧增长,现有的IP体系架构难以满足用户不断增长的需求。CCN成为未来网络研究的热点,其最大的特点是网络节点的处处缓存,所以为CCN设计一种高效的缓存机制显得尤为重要。针对CCN中现有的缓存机制存在一些问题,提出了一种基于内容收益的内容流行度和节点重要度PBCS的缓存方案。在请求次数满足收益标准的前提下,进行内容流行度与节点重要度的匹配,得到符合要求的缓存节点。仿真结果表明,该方案提高了内容的节点命中率,缩短了获取内容的平均跳数。
With the increasing of networking traffic, the current IP network could not satisfy the requirement of users. CCN be- comes a hot research in future networking, its notable feature is caching everywhere. It is important to design an efficient caching mechanism. For helping relieve some existing problem in caching mechanism, a popularity and betweenness based caching scheme is put forward. While the number of requests meet the income standard, matching content popularity and importance of node, final- ly, the caching nodes is found. The simulation results show that the node hit rate is increased and the average hops of obtaining content is cut down.
出处
《电子技术应用》
北大核心
2017年第3期100-103,共4页
Application of Electronic Technique
关键词
缓存
内容收益
内容流行度
节点重要度
caching
content profit
content popularity
importance of node
