Teletraffic/transmission performance of multi-hop networks using hybrid-store-and-forward

The teletraffic/transmission performance of regular two-connected multi-hop cell-switching optical networks in uniform traffic under hybrid store-and-forward is presented. The Manhattan street (MS) network and Shufflenet (SN) are compared in terms of average queueing delay, queue size, transit delay, throughput, and bit error rate (BER) for intensity modulation/direct-detection (IM/DD) both analytically and by simulation. A hybrid semi-transparent store-and-forward node architecture is presented. Cells are electronically stored just in the case of conflict to avoid deflection, otherwise the cells will traverse the node without opto-electronic conversion. This architecture performs well, in terms of throughput, propagation delay and BER. It is also shown that by combining deflection routing with the store-and-forward scheme the network can accommodate two different bit-rates. This suggests that the proposed hybrid scheme may have good potential for future multimedia networks.