基于丢包区分及共享瓶颈的MPTCP拥塞控制算法  

MPTCP congestion control algorithm based on packet loss differentiation and shared bottleneck link

作　　者：黄宏程[1] 陆卫金 刘建星[1] 胡敏[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《计算机工程与设计》2016年第3期571-576,共6页Computer Engineering and Design

基　　金：国家自然科学基金项目(61401051);重庆市科委基础与前沿研究计划基金项目(CSTC2014jcyjA40039);重庆市教委科技基金项目(KJ1400402)

摘　　要：为有效利用非共享瓶颈链路处的网络资源并解决多路径传输控制协议(multipath TCP,MPTCP)应用在异构网络中缺少丢包区分机制导致拥塞窗口急剧下滑等问题,提出一种基于子流丢包区分及共享瓶颈的MPTCP拥塞控制算法。通过检测MPTCP中子流共享瓶颈的情况,进行动态地调整拥塞窗口,充分利用非共享瓶颈链路处的网络资源;在MPTCP应用于异构网络时,引入丢包区分机制,避免因非拥塞丢包浪费网络资源。实验结果表明,与现有MPTCP拥塞控制算法相比,该算法确保了共享瓶颈公平性,改善了网络的吞吐量性能。To utilize resource efficiently in unshared bottleneck link and resolve the problem that the congestion window declines sharply for the lack of loss differentiation mechanism in existing multipath TCP（MPTCP）congestion control algorithm,a MPTCP congestion control algorithm based on packet loss differentiation and shared bottleneck link was presented.The size of congestion window was adjusted dynamically by detecting whether subflows shared the common bottleneck link,and network resource was then fully utilized.Wasting network resource was avoided by introducing loss differentiation mechanism in heterogeneous network.Results of the simulation indicate the algorithm can improve the throughput of MPTCP connection.

关 键 词：多路径传输控制协议 拥塞控制 共享瓶颈 丢包区分 吞吐量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]