摘要
现有的转发策略对命名数据网络(NDN)的网络性能造成了诸多不利影响,需要考虑新的NDN转发准则以应对无线链路和节点移动性的问题,本文提出了一种提供商感知转发(PAWF)策略.该策略在转发决策过程中融合了兴趣/数据包的额外字段,在额外字段中携带了准提供商的信息,使得提供商信息能够位于网络的每个节点中,利用缓存决策技术提高了数据传输性能,并基于这些额外信息做出最终转发决策.搭建基于ndnSIM的NSN网络仿真环境对盲目转发(BF)和PAWF策略的性能进行了比较,实验结果表明,PAWF的性能大幅度优于BF策略,具有更短的完成时间和较低的数据冗余度.
Aiming at the problem of many adverse effects in the named data networking(NDN)caused by the existing forwarding strategy,the new NDN forwarding strategy is considered to deal with wireless link and node mobility,and a provider aware forwarding(PAWF)strategy is proposed in this paper.This method combines the extra field of interest/packet in the decision-making process,the supplier information contained in the extra field can be used to make provider information in each node located in the network,the data transmission performance is improved by using cache decision technology,and based on the additional information to make the final decision forward.NSN network simulation environment based on ndnSIM is built to compare the performance of blind forwarding(BF)and PAWF.The experimental results show that the performance of PAWF is better than BF strategy greatly,and has shorter completion time,lower data redundancy.
出处
《湘潭大学自然科学学报》
CAS
2018年第1期115-118,共4页
Natural Science Journal of Xiangtan University
基金
2014年中国科学院"西部之光"项目
四川省科技计划项目(2014GPT0011)
关键词
命名数据网络
提供商感知转发
盲目转发
缓存决策
named data networking
provider aware forwarding
blind forwarding
cache decision
作者简介
通信作者：叶小琴（1979-）,女,四川德阳人,讲师.Email：yexiaoqinsc@126.com
