H_∞ control approach to congestion control for multi-link network
Wen‐An Zhang · Systems engineering and electronics · 2009
The congestion control problem is investigated based on a class of multi-link networks with active queue management(AQM) routers.A state-space model is used to describe the dynamic properties of the multi-link network flow,and the discrepancy between available link bandwidth and nominal link bandwidth is considered as a disturbance.Then,the network congestion problem is solved by using the H∞ control approach.The size of actual window and length of queue are adjusted to the reference values by the packet-dropout rate under the change of the available link bandwidth,and thus the congestion control purpose is achieved.Finally,two simulations show the effectiveness of the proposed method.