基于多源的NDN端节点拥塞控制算法  

Multi-source based end-node congestion control algorithm for NDN

作　　者：沈越欣 王兴伟 李洁[1] 曾荣飞 Shen Yuexin;Wang Xingwei;LI Jie;Zeng Rongfe(Northeastern University,LiaoningShenyang 110169)

机构地区：[1]东北大学

出　　处：《网络空间安全》2019年第8期75-83,共9页Cyberspace Security

基　　金：国家自然科学基金资助项目(项目编号:61872073、61572123);辽宁省高校创新团队支持计划资助项目(项目编号:LT2016007)

摘　　要：文章以NDN网络现存拥塞控制算法的端节点拥塞信号获取不准确为研究问题,提出一种基于端节点的拥塞控制算法。这种算法从源头上控制拥塞,并依据多个拥塞信号进行端节点速率调整,以更贴近全局网络状态的方式进行端速率调整以保证吞吐量。文章考虑NDN多源特性,结合累积排队时延信息,设计端节点重传定时策略,避免过多重传加重网络拥塞,进而确保网络的稳定性。Targeting at the problems of the existing congestion control algorithms in NDN,such as inaccurate congestion signal obtaining of end-based congestion control,the paper proposes an end-node based congestion control algorithm.The algorithm controls congestion from the source and adjusts end node rate according to multiple congestion signals.It adjusts the end rate closer to the global network state to guarantee throughput.And considering the NDN multi-source feature,we design a retransmission timing strategy combined with the accumulated queuing delay information,which can avoid too much retransmission aggravating network congestion and ensure the stability of the network.

关 键 词：命名数据网络 多源 端节点拥塞控制 累积排队时延 重传定时策略 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]