Performance analysis of virtual optical bus networks

We analyze the performance of virtual optical bus (VOB) networks, which is a packet-oriented all-optical solution for transport networks. VOB groups the flows into clusters and coordinates their packets within each cluster in order to minimize the packet collision in the network. We theoretically study the multiplexing (grouping) of packets of flows in a VOB, by modeling a VOB node, in a VOB network, as a queuing system. We derive the expression for the packet loss rate due to inter-VOB collisions, and compare the performance (packet loss rate) of VOB with that of Optical Burst Switching (OBS). We show that the packet loss rate for VOB is upper bounded by the packet/burst loss rate of OBS.