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Optical transmission allows massive data transfers thanks to its tremendous transport capacity. Sustained efforts have been made to address the physical constraints that limit its flexibility, but as for today, translucent architectures involving electrical treatments are still favored. Optical Burst Switching (OBS) appears as a promising alternative to Optical Circuit Switching (OCS) in an all-optical...
Optical Burst Switching (OBS) has been proposed to increase the resource utilization achieved by Optical Circuit Switching (OCS), which is impaired by its coarse granularity. A crucial step toward OBS maturity deals with the feature of lossless guaranteed transfers. No contention resolution mechanism, even combined with efficient pro-active mechanisms has been able to provide such a guarantee so far...
Optical burst switching (OBS) has been proposed a decade ago to enhance the resource utilization of the current OCS technology throughout statistical multiplexing. Therein the lack of optical memory is sidestepped by advanced signaling protocols that cannot, however, prevent contentions. The contention probability is highly related to the traffic profile in the core network for which the Engset model...
Loss-less transfers are commonly associated with circuit switching: circuit switching in all-optical networks (OCS) prevent from collisions by avoiding multiplexing below the wave-length granularity. Spectral multiplexing can be combined with time multiplexing in opaque networks at the expense of additional equipment (MSPP) and complex synchronization issues. Optical burst switching has been proposed...
All-optical circuit switching prevents contention by forbidding multiplexing beyond the wavelength granularity. The drawbacks of such a coarse granularity can be reduced thanks to translucent architectures with MSPPs (Multi-Service Provisioning Platforms). Another switching paradigm of interest is offered by the Optical Burst Switching (OBS) that manages finer granularity transfers but that encounters...
Optical burst switching (OBS) is a new optical switching paradigm where traffic can be switched and groomed at a lower level compared to optical circuit switching (OCS). Although research in OBS networks has evolved from theoretical investigations to proof-of-concept demonstrations, several key issues need to be investigated further before OBS prototypes can clearly outperformed OCS networks. While...
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