ICN中基于节点权重的缓存大小分配方案研究  

Research on cache size allocation scheme based on node weight in information-centric networking

作　　者：徐昌彪[1] 吕顺[1] 

机构地区：[1]重庆邮电大学测控与信息传输研究所,重庆400065

出　　处：《计算机应用研究》2017年第1期214-216,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(61301124);重庆高校创新团队建设计划资助项目;重庆邮电大学科研基金资助项目(A2012-16)

摘　　要：为了使路由器的缓存大小配置合理,首先综合考虑路由器的度数权重、紧密度、网络的中心度、请求影响度等度量指标,定义了一个新的度量指标,称为节点权重;然后提出一种基于节点权重的缓存大小分配方案,将网络所需的容量按比例分配给路由器。仿真结果表明,与均匀分配相比,路由器的缓存空间利用率至少提升了8%,命中率至少提高了6%;与基于请求影响度的分配方案相比,路由器的缓存空间利用率至少提升3%,命中率至少提高了3%。In order to allocate cache size of each router reasonably, this paper defined a new metric named node weight which considered several metrics （ e. g. , degree weight, closeness centrality, network centrality, and request influence degree）. Then, it proposed a cache size allocation scheme based on node weight, to allocate router cache size proportional to node weight. Numerical experiments reveal that compared with the homogeneous assignment, the utilization rate of the router＇ s cache space increases by 8% at least and hit rate of the router＇ s cache space increases by 6% at least;compared with cache size allocation based on request influence degree, the utilization rate of the routeFs cache space increases by 3% at least and hit rate of the router＇ s cache space increases by 3% at least.

关 键 词：网内缓存 信息中心网络 节点权重 缓存大小分配 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]