摘要
针对命名数据网络流量全局性优化调度问题,分析已有工作,提出一种基于集中控制的方法。所提方法兼顾网络性能与通信开销,先选择合适节点作为E-NDN节点,再利用控制器根据网内缓存、Interest包聚合情况和热门内容的流量需求计算相应的多路径转发策略并下发至E-NDN节点,以达到全局性优化的目的。实验结果表明,所提方法可显著降低最大链路利用率,提高网络性能,同时优化代价较小,控制器与节点间的通信开销仅略有增加。
In order to address the global optimization problem for traffic scheduling in named data networking,related works were analyzed,a method based on centralized control was proposed.The proposed method took network performance and communication overhead into account.In the proposed scheme,appropriate nodes would be selected as E-NDN nodes,then the controller calculated the corresponding multi-path forwarding policies and sent them to E-NDN nodes according to the in-network cache,the aggregation of Interest packets,and the traffic demands of popular contents to achieve global optimization.The evaluation results indicate that the proposed method can significantly reduce the maximum link utilization and improve network performance.Simultaneously,the proposed method will not cause a large optimization cost,and communication overhead between the controller and nodes will increase slightly.
作者
董谦
李俊
马宇翔
DONG Qian;LI Jun;MA Yuxiang(Computer Network Information Center,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Department of Electronic and Information Engineering,Foshan University,Foshan 528000,China)
出处
《通信学报》
EI
CSCD
北大核心
2018年第7期68-80,共13页
Journal on Communications
基金
国家重点研发计划基金资助项目(No.2017YFB1401500)
国家自然科学基金资助项目(No.61672490)~~
关键词
命名数据网络
集中控制
流量调度
混合网络
线性规划
named data networking
centralized control
traffic scheduling
hybrid network
linear programming
