Mathematics – Optimization and Control
Scientific paper
2009-08-26
Mathematics
Optimization and Control
28 pages
Scientific paper
We consider a multi-class single server queueing network as a model of a packet switching network. The rates packets are sent into this network are controlled by queues which act as congestion windows. By considering a sequence of congestion controls, we analyse a sequence of stationary queueing networks. In this asymptotic regime, the service capacity of the network remains constant and the sequence of congestion controllers act to exploit the network's capcity by increasing the number of packets within the network. We show the stationary throughput of routes on this sequence of networks converges to an allocation that maximizes aggregate utility subject to the network's capacity constraints. To perform this analysis, we require that our utility functions satisfy an exponential concavity condition. This family of utilities includes weighted $\alpha$-fair utilities for $\alpha >1$.
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