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ATM网络中ABR业务采用基于速率反馈的拥塞控制机制,通过调节发送源发送速率以适应CBR/VBR等高优先级业务剩余的带宽.控制理论为ATM网络的拥塞控制提供了理论指导.作者分析了ATM网络中单拥塞节点的模型,应用极点配置方法设计了拥塞控制器,保证了瓶颈节点的网络缓冲区队列水平的稳定性及带宽的公平分配,从而有效避免了拥塞的发生.仿真结果验证了算法的有效性.
ABR in ATM network uses rate feedback based congestion control mechanism to adjust the sending rate of sending source to adapt to the remaining bandwidth of CBR / VBR high priority services.Control theory provides theoretical guidance for congestion control of ATM network.Analyzed ATM networks, a congestion controller is designed by using the pole placement method to ensure the stability of the network buffer queue level and the fair bandwidth allocation of bottleneck nodes, thus effectively avoiding the occurrence of congestion.The simulation results verify The effectiveness of the algorithm.