MPTCP联合拥塞控制机制的Markov模型  

Markov modeling of MPTCP's coupled congestion control

作　　者：徐明伟[1] 张志超[1] 

机构地区：[1]清华大学计算机科学与技术系,北京100084

出　　处：《清华大学学报（自然科学版）》2012年第9期1281-1285,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金面上项目(61073166);国家自然科学基金重点资助项目(61133015);国家"九七三"重点基础发展研究项目(2009CB320502;2012CB315803);国家"八六三"高技术项目(2011AA01A101)

摘　　要：为了研究多路径传输控制协议(transmission con-trol protocol,TCP)的RFC标准MPTCP的联合拥塞控制机制,提出了一种基于Markov过程的预测模型。该模型是一种离散分组模型,将多条彼此相关的子流拥塞窗口联合起来,通过建立其在多维离散状态空间下的Markov过程,对MPTCP流的有效吞吐率性能参数进行建模。对比实验结果表明:输入参数变化时该模型预测结果与模拟实验结果变化趋势相同。该模型能有效预测MPTCP联合拥塞控制机制性能,同时也为其他多路径TCP拥塞控制机制提供了理论参考。A prediction model based on Markov processes is presented to analyze the coupled congestion control mechanism of MPTCP, which is the request for comments （RFC） on the multipath transmission control protocol （multipath TCP）. This discrete packet model couples the relative congestion windows of the subflows and models the goodput performance of the MPTCP flow by building a Markov chain in a multi-dimensional discrete state space. Comparisons show that the model has the same trends as simulations with different input parameters. This model effectively predicts the performance of the MPTCP＇s coupled congestion control and provides theoretical guidance for other multipath TCP＇s congestion control mechanism models.

关 键 词：MPTCP 联合拥塞控制 MARKOV模型 有效吞吐率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]