一种基于权值动态调整的MPTCP自适应拥塞控制算法  

MPTCP Self-adaptive Congestion Control Algorithm Based on Dynamic Weight Adjusting

作　　者：王富荣[1] 张宏[2] 

机构地区：[1]南通航运职业技术学院,江苏南通226010 [2]南京理工大学计算机科学与技术学院,南京210094

出　　处：《科技通报》2012年第12期140-142,共3页Bulletin of Science and Technology

基　　金：江苏省交通科学研究计划项目(2011Y21-3)

摘　　要：随着计算机网络技术的发展,用户对网络资源访问速度的要求越来越高。特别是近些年语音、图像以及视频等多媒体数据大量出现在互联网上,网络的拥塞问题也变得日益严重,拥塞控制对于保证网络的稳定性也具有非常重要的作用。本文提出了一种改进的MPTCP自适应拥塞控制算法,将权值动态调整策略融入拥塞控制中。算法的核心思想是当某一路径接收到数据包则增加其权值,相反如果丢失了数据包则降低其权值,修改权值时综合考虑了前一个时刻该路径的权值及其拥塞窗口的大小。仿真实验结果表明,本文提出的MPTCP拥塞控制算法改进方案有效地提高了系统的吞吐量,并且能够使得网络资源得到公平的利用。With the development of computer network technology,users＇ requirements of network access speed increasing greatly as well.Particularly,as a large number of multimedia data such as voice,image and video appears on the Internet in recent years,network congestion becomes an important problem which is needed to be solved.Congestion control has a very important role to guarantee the stability of network.This paper presents an improved MPTCP self-adaptive congestion control algorithm,and introduces weight dynamically adjusting strategy into congestion control.The core idea of the proposed algorithm lies in that path weight increasing when it receiving a packet,on the contrary,path weight decreasing when it losing a packet.Path weight and congestion window size are used to modify the path weight at the previous time.Simulation results show that the proposed algorithm can effectively enhance system throughput and utilize network resources justly.

关 键 词：MPTCP 自适应 拥塞控制 权值动态调整 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]