RateOptimal scheduling schemes for asynchronous InputQueued packet switches
Thomas Bonald, Davide Cuda · ACM SIGMETRICS Performance Evaluation Review · 2012
The performance of input-queued packet switches critically depends on the scheduling scheme that connects the input ports to the output ports. We show that, when packets are switched asynchronously, simple scheduling schemes where contention is solved locally at each input or output can achieve rate optimality, without any speed-up of the internal transmission rate.