基于网络节点输出速率调节的非线性拥塞控制及稳定性鲁棒性分析

该文针对计算机高速互联网中最大服务交通流即能控交通流的拥塞调节问题,提出了一种基于网络节点输出速率调节的非线性拥塞控制机制并对其进行了稳定性和鲁棒性分析。克服了传统的基于输入端控制需要信源端和传输通道多重支持的约束。在单个节点的业务流模型基础上,将信源输入视为系统的扰动,通过调节输出速率来控制节点队列稳定。运用OPNET仿真软件对其进行了不同输入和工作条件下的仿真,结果显示,在所设计的非线性模糊PID队列控制机制下,队列稳定性好且具有较好的鲁棒性和抗干扰性。

A Nonlinerarity Congestion Control about Queue Based on Network Node Output Rate and Its Analysis about Stability and Robustness

With regard to the flow regulation of the best-effort traffic,i.e.,the contraiable traffic in high-speed computer communication networks.Because the congestion control by controlling node input needs information and support the source and the transfer channels,a nonlinerarity congestion control mechanism,which adaptively controls the output rate of network node,is proposed and analyzed.Simulation that runs on the OPNET software is carried out on the single node traffic model.The simulation results show that the mechanism proposed works well in terms of stability of the queue size and system robustness.