Delayed reservation decision in optical burst switching networks with optical buffers

Abstract

The proposed delayed reservation decision scheme offers the same node complexity as that in general OBS networks with optical buffers. Simulations show the proposed scheme has better performance than existing schemes in terms of burst loss probability.

Dimensioning fiber delay lines in optical burst switching networks

“…After the control packet has successfully reserved the FDL and data channel for the contended data burst, the control packet is updated and sent to the downstream node. According to the instant of sending out the control packet, there are two options: one option is that control packet is electronically buffered with delay D to keep the same offset as the scenario without FDLs [1,2,[9][10][11]; the other option is to send out control packet immediately after its processing [12], as shown in Figure 3. Most previous work [1,2,[9][10][11] note that a burst with longer offset time has lower dropping probability.…”

Contention resolution in OBS using FDL_WA_WPREMP in hybrid based burst assembly

“…There are four main ways of resolving contention in OBS. The first two are the use of fiber delay lines (FDL) to delay the burst for a discrete and finite period [1] and [2] and deflecting the burst to another output fiber, known as deflection routing [3] and [4]. The third resolution is by implementing wavelength conversion [5] and [6] where a contending burst is sent on another wavelength through wavelength conversion.…”