Scheduling Techniques in an Integrated Hybrid Node With Electronic Buffers
Integrated hybrid optical packet/circuit switched architectures enable networks with the Guaranteed Service Transport (GST) of circuit switching and the statistical multiplexing known from packet switching. The utilization of the optical light-paths is increased by inserting low priority Statistically Multiplexed (SM) traffic in the guaranteed circuit switched traffic gaps. Previous studies of these nodes have used optical packet switches together with reservation techniques to minimize the SM packet losses while giving absolute priority to circuit switched traffic. In this paper, the authors propose a novel scheduling technique that applies electronic buffers and multiple queues to find a suitable SM packet to fit in a GST gap.