基于排队时延主动探测的多路传输拥塞控制  

Congestion control of multipath transmission based on proactive RTT probing

作　　者：赵静静 衷璐洁[1] ZHAO Jing-jing;ZHONG Lu-jie(College of Information Engineering,Capital Normal University,Beijing 100048,China)

机构地区：[1]首都师范大学信息工程学院,北京100048

出　　处：《计算机工程与设计》2021年第3期628-635,共8页Computer Engineering and Design

基　　金：国家自然科学基金项目(61872253)。

摘　　要：为解决传统基于时延的MPTCP拥塞控制算法被动地等待重传超时或重复确认来确认链路拥塞,不能及时避免拥塞的问题,提出以满足多路径流公平性为基础,实施链路RTT主动探测,设计并实现一种基于排队时延主动探测的拥塞区分链路质量优化协议PPQD,以排队时延预测结果及其均值比较为依据实施拥塞窗口动态调整。实验结果表明,该方法可大幅减少窗口抖动,在吞吐量较LIA提升超20%的同时进一步保障了用户体验质量。To solve the problem that the traditional MPTCP congestion control takes the strategies of passive waiting for retransmission timeout or duplicate ACK to confirm the situations of congestion,which cannot avoid congestion in time,an optimized congestion differentiation protocol PPQD was presented,in which RTT proactive probing was implemented and the network fairness was satisfied.Dynamic adjustment of the congestion window was implemented according to the queuing delay prediction result and its average comparison.Experimental results show that the proposed approach reduces window jitter substantially,improves throughout by over 20%,and guarantees the user experience quality.

关 键 词：多路传输控制协议 拥塞控制 排队时延 窗口抖动 网络公平性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]