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中文摘要：
通过对Kelly拥塞控制模型的改进,提出了一个基于时滞差分方程的通用模型GKJZ.在GKJZ模型的框架下,对显式拥塞反馈算法VCP进行了建模,并给出了其局部稳定性的充分条件.与大多数已有的结果不同,该稳定性条件与时延无关,从而可以静态地设置算法参数,具有较强的鲁棒性.NS2仿真结果证明了模型的精确性,并显示该稳定性条件在平衡点附近较大的吸引域内被满足.
英文摘要：
By improving Kelly model, a general model for congestion control, called GKJZ （General Kelly-Johari-Zhang）, Model was proposed, which was denoted by delayed difference equations. In the framework of GKJZ, an explicit feedback congestion control algorithm： VCP （variable structure congestion） was modeled and its sufficient condition for local stability was given. Different from most of the existing results, this stability condition was independent from delay, so the control parameters of algorithm could be statically configured and robustness could be achieved. The NS2 simulation results verified the accuracy of this model and showed that this stability condition could be met in a considerable attraction region near the equilibrium.
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