基于带宽预测的VCP拥塞控制改进算法  

Improved VCP Congestion Control Algorithm Based On Bandwidth Estimation

作　　者：何建新[1] 周翠红[1] 

机构地区：[1]湖南城市学院信息科学与工程学院,益阳413000

出　　处：《计算机系统应用》2016年第10期169-172,共4页Computer Systems & Applications

基　　金：湖南省科技计划项目(2014FJ4252)

摘　　要：反馈信息不足导致VCP无法根据网络拥塞程度进行相应窗口调整,在网络突发业务流情况下存在慢收敛问题.针对高带宽延时网络特性,本文提出一种基于带宽预测的VCP拥塞控制改进算法VCP-BE.该算法结合端到端可用带宽预测和2位显式拥塞反馈信息提高拥塞反馈精度,为源端拥塞窗口调节提供更精细的拥塞控制信息.仿真结果表明,VCP-BE能够有效适应高带宽时延网络环境,具有比VCP及MLCP更快的公平收敛速度.VCP can＇t adjust the congestion window according to the congestion degree because of insufficient feedback information,and shows slow convergence speed with the burst traffic flows.This thesis presents a improved VCP congestion control algorithm named VCP-BE in high bandwidth delay product networks,which uses the end-to-end bandwidth estimation algorithm and two existing ECN bits to improve the accuracy of congestion information feedback, provides more precise congestion control information for the source congestion window adjustment.Simulations show that the improved VCP-BE can adapt to high bandwidth delay networks, has faster fair convergence speed than VCP and MLCP.

关 键 词：带宽预测 高带宽时延网络 拥塞控制 VCP 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]