期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2018
卷号：10
期号：2
页码：242-258
DOI：10.15676/ijeei.2018.10.2.4
出版社：School of Electrical Engineering and Informatics
摘要：In Software-Defined Networking (SDN), even though centralized information onnetwork condition is available at the controller, this information is not used to improvenetwork condition when congestion happens. SDN requires policy embedded in thecontroller to manage its network, e.g., strategy for network resource allocation. In this paper,we propose an optimal rate allocation schemes to support congestion control in SDN.Congestion control and rate allocation are like two sides of the same coin. Optimal rateallocation can reduce congestion probability, such that a complicated congestion control isnot required. This rate allocation is based on mathematical optimization using threeoptimization criteria, i.e., minimization on mean transmission time, minimization on standarddeviation, and allocation based on proportional rate allocation. The minimization problemfor mean and standard deviation are solved using Lagrange method, while proportional rateallocation problem is solved using linear equation. The simulation results show that ourproposed formula for rate allocation schemes using rate information provides betterperformance compared to rate allocation schemes without rate information.
关键词：rate allocation; load distribution; congestion control; SDN
