多通道ATM网络鲁棒拥塞控制

Robust congestion control in multi-virtual-circuit ATM networks

拥塞控制对ATM网络有效、稳定运行具有重要的作用.在单瓶颈多通道的网络模型下,基于Smith预估原理,提出一种新颖的鲁棒拥塞控制器设计方案.这种基于速率的拥塞控制可以保证ABR的服务质量(QoS).理论分析和仿真结果表明,所提出方案收敛速度快,对网络的不确定因素具有较强的鲁棒性.

A novel robust controller design algorithm, based on Smith principle, is presented for ATM congestion control in which multiple virtual circuits are throttled at a single intermediate node. This rate-based congestion control algorithm can improve the QoS of ABR flow, which can maintain queue length of a bottleneck node at a desired level and the robustness of stable operation networks. Theoretical and experimental results show that the mechanism has the advantages of fast convergence and intensive robustness for networks uncertainties.