命名数据网络多态路由承载的内容分发模型

发布时间：2018-05-07 01:07

本文选题：命名数据网络 + 多态路由　；参考：《计算机应用》2017年02期

【摘要】：针对命名数据网络(NDN)难以保障多样化业务服务需求问题,提出了多态路由承载的内容分发模型(CDMPR)。该模型通过内容请求、路由计算、内容查表和内容缓存四种类型的重构模块组合来承载不同特征需求的业务传输,详细设计了面向实时业务、非实时流媒体业务和用户自产生业务的多态路由算法,分别为改进蚁群优化路由算法、循迹路由策略和基于导向性副本通告的捷径路由机制。仿真结果表明,相比基于业务类型的多样化内容分发机制(DCDS)算法,CDMPR将网络节点平均缓存命中率提高了4.45%~13.8%;相比内容中心网络(CCN)算法,三种业务的平均响应时延分别缩短了29.17%~53.02%。CDMPR实现了对多样化业务差异化服务需求的支持。
[Abstract]:In order to solve the problem that named data network (NDN) is difficult to guarantee the service requirement of diversified services, a content distribution model (CDMPRA) based on polymorphic routing is proposed. The model is composed of four types of refactoring modules, such as content request, routing calculation, content lookup table and content cache, to carry the service transmission with different characteristic requirements. The real-time service oriented is designed in detail. The polymorphic routing algorithms for non-real-time streaming media services and user-generated services are improved ant colony optimization routing algorithm, trail routing strategy and short-cut routing mechanism based on directed copy notification, respectively. The simulation results show that the average cache hit rate of network nodes is increased by 4.45% and 13.8% compared with the DCDS algorithm, which is based on the diversified content distribution mechanism based on service types, while the content center network (CCNN) algorithm is compared with the content center network (CCNN) algorithm. The average response delay of the three services shortens the 29.17%~53.02%.CDMPR to support the diversity of service requirements.
【作者单位】：甘肃省计算中心;国家数字交换系统工程技术研究中心;
【基金】：国家863计划项目(2014AA01A302)~~
【分类号】：TP393.02

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