Title :
Protection switching for optical bursts using segmentation and deflection routing
Author :
Griffith, David ; Sriram, Kotikalapudi ; Golmie, Nada
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
Burst segmentation in OBS networks can significantly reduce the amount of data that is lost due to contention events by dropping or deflecting only the portion of a burst that overlaps another contending burst. In this letter, we demonstrate how segmentation combined with deflection routing can be used to reduce the amount of data that is lost when network elements fail. By enabling an OBS switch to deflect the tail-end segments of bursts that are in transmission as soon as it becomes aware of a downstream link failure, the retransmission of lost data can be reduced.
Keywords :
optical fibre networks; telecommunication network reliability; telecommunication network routing; telecommunication switching; OBS network; burst segmentation; data retransmission; deflection routing; downstream link failure; optical burst switching; protection switching; tail-end segment; Analytical models; Burst switching; Event detection; NIST; Optical burst switching; Optical losses; Optical switches; Protection switching; Routing; Telecommunication traffic;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.10006
