Congestion Control Model for Network Coding Based on Utility Optimization
WU Zhi-hao · Jisuanji gongcheng · 2011
This paper formulates a class of Network Utility Maximization(NUM) problem for coded multicasts,which incorporates constraint used to stabilize sender's packet buffer and intermediate node's queue.Based on primal and primal-dual form of the problem,it proposes two congestion control models for network coding,whose stability is demonstrated through Lyapunov criteria.The models are entirely distributed feedback control systems.The corresponding algorithms can handle network dynamism with only end-to-end information exchange,and have the form of TCP-like congestion control,showing their compatibility with current network architecture.