内容命名网络中一种基于历史访问记录的转发策略的设计与实现

A forwarding strategy based on historical access records in named data networking

内容命名网络(NDN)作为ICN的实例系统,以其区别于传统IP网络的独特体系结构在近些年受到了研究界的普遍关注,NDN舍弃了IP网络点到点的传输方式,设计了基于内容名字的寻址方式,使得内容的提供者由集中式一点变为分散式的多点,大幅提高了数据信息的利用率。将研究的重点放在NDN路由节点的转发环节,提出并实现了一种新的基于历史访问记录的转发策略HRF,使得数据请求者能够发现本地的邻居节点是否持有请求者所需的内容,从而从本地网络高效快速地获取所需数据,并通过实验验证了HRF策略的可行性和有效性。

As the instance system of information center networking （ICN）, the named data networking （NDN） attracts more and more attention in academia. NDN changes the network service from “destination to destination” to “retrieving data of given names”. NDN is more convenient for consumers to share data and it gets a substantial increase in the rate of repeated utilization of data. We focus on the forwarding of NDN routing nodes and propose a forwarding strategy based on historical access records called HRF, which can find out whether there is target data stored by the neighbor nodes in the local network, and then access the target data in the local network efficiently and rapidly. Through a series of typical scenarios, we validate the feasibility and effectiveness of the HRF.