| 边缘网络环境中的NDN转发策略研究 |
| NDN forwarding strategy in edge network |
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| DOI： |
| 中文关键词: 命名数据网络；边缘网络；转发策略；路由算法 |
| 英文关键词:named data network(NDN);edge network;forwarding strategy;routing algorithm |
| 基金项目:国家重大科研仪器研制（61427801）资助项目 |
| 作者 | 单位 | | 邓欣 | 南京邮电大学 通信与信息工程学院，江苏南京210003 | | 江凌云 | 南京邮电大学 通信与信息工程学院，江苏南京210003 |
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| 中文摘要: |
| 将命名数据网络（NDN）应用到边缘网络环境是当前的研究趋势之一，但NDN本身的洪泛机制存在缺陷，且传输过程中的数据包丢弃等问题始终没有得到完善的解决。基于上述问题，文中提出了一种边缘网络环境中基于SDN的NDN转发策略。该策略通过将控制平面与数据转发平面相解耦，解决了传统NDN中可能出现的转发表更新延迟等问题，同时为数据包转发过程中遇到的链路中断等问题提供了解决方案。该转发策略经实验证明具有可行性，且相较于其他的NDN转发策略而言在丢包率方面有所改善。此外文中针对边缘网络环境提出了一种新的路由算法，将遗传算法与变邻域搜索算法相结合，综合考虑了网络路径时延以及能耗等多种因素，并仿真验证了该算法较其他传统算法更具优势。 |
| 英文摘要: |
| It is currently a trend of applying named data network (NDN) into edge networks, while the flooding mechanism of NDN itself is defective,and the problems,such as loss of data packets during the transmission process,remains unsettled.Based on above mentioned problems,a SDN based NDN forwarding strategy in edge networks is proposed.By decoupling the control platform with data forwarding plane,the strategy solves the possible delaying problems during forwarding with the existing NDN and provides a solution for link down during data packet forwarding process.Experimental results prove that the strategy is feasible,and compared with other NDN forwarding strategies,the packet loss is improved.Aimed at the edge network environment,a new routing algorithm is put forward by combined the genetic algorithm and variable neighborhood search algorithm and all factors,such as of network route delaying,energy consumption,etc.are considered.The simulation experiment shows that the new algorithm has advantages compared with other algorithms. |
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