Cost-Effective Burst-Over-Circuit-Switching in a Hybrid Optical Network

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Executive Summary

All optical switching has been proposed as a candidate to allow high capacity networking in the future. Currently, Optical Circuit Switching has been widely deployed, although this approach is potentially bandwidth-inefficient for small granularity flows and needs relatively long set-up times. Research is being done into Optical Packet Switching (OPS) and Optical Burst Switching (OBS), but these kinds of architectures are not yet able to be deployed due to the large network cost they impose. This paper tries to combine the benefits from OCS and OBS, by investigating a hybrid switching technique called Burst-Over-Circuit-Switching (BoCS) where both OBS and OCS are used at a specific part in the network.

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