Input and output queueing packet switch with backpressure mode for loss sensitive packets in threshold scheme

We propose an N/spl times/N input and output queueing packet switch model with backpressure mode for loss sensitive packets in threshold scheme. In the proposed model, delay sensitive packets gain an advantage over loss sensitive packets at input and output ports and backpressure mode is applied for loss sensitive packets. We evaluate the average system delay and the packet loss probability of each class by theoretical calculation and computer simulation. The results show that the proposed model is useful to decrease the average system delay of delay sensitive packets and the packet loss probability of loss sensitive packets.