A family of flexible offset-time based wavelength schedulers for OBS edge-nodes

Abstract

A family of variable offset-time based wavelength scheduling schemes for OBS edge-nodes, is proposed which performs 4-20 times better than ordinary LAUC-VF schedulers in terms of byte loss rate (ByLR). The schedulers accept a minimum and a maximum limit of offset-time along with the length of the burst as input and then return the appropriate wavelength and the exact offset-time, to be used for the burst. The basic principle is to align the burst either at the beginning or at the end of an existing void so that no new void is created after scheduling the burst unless mandated by the offset-time limits.