摘要
基于差分服务模型的带宽保证服务已经得到较多的应用,这类通过分组标记和丢弃算法实现的非刚性带宽保证具有实现简单、扩展性强的特点。但是,由于端系统的TCP协议对合约带宽信息的不感知,使得应用难以获得网络提供的带宽保证。在分析了双窗口TCP拥塞控制算法的基础上,提出了基于合约窗口的拥塞控制算法,并对算法进行了测试和建模分析。该算法简单、易于实现,并且在网络突发拥塞时,收敛速度快,不影响网络的稳定性。
DiffServbased bandwidthguaranteed services have been gradually deployed in the Internet, achieved by packet marking and dropping mechanism. Although the guarantee is not hard, the service is easy and extended. However, TCP protocols residing in host ends have no idea about the contract bandwidth, they cannot realize bandwidth offered by the network. This paper proposes a new TCP congestion control algorithm based on analysis of twowindow TCP congestion control algorithm, and verifies it by simulation tests and modeling. The proposed algorithm is simple and convergences rapidly when network is undergoing a burst congestion.
出处
《计算机应用》
CSCD
北大核心
2003年第9期8-11,共4页
journal of Computer Applications
关键词
差分服务
吞吐率
拥塞窗口
拥塞控制
建模
DiffServ
throughput
congestion window
congestion control
modeling
