Abstract
We consider a bufferless optical burst switching optical cross connect modeled as a continuous-time Markov chain based on a generalized Engset model. We focus specifically on critical load and other given levels of high utilization conditions and evaluate the required number of wavelength channels per cable to keep the blocking probability below a given level. We observe that although a large number of wavelength channels per cable are required to achieve low blocking probability under critical load condition, the required number of such channels decreases significantly if the utilization is allowed to drop to 90% or 80%. We also propose a new blocking probability approximation that is more accurate than previous approximations under critical load condition. © 1997-2012 IEEE.
| Original language | English |
|---|---|
| Article number | 6168151 |
| Pages (from-to) | 544-546 |
| Journal | IEEE Communications Letters |
| Volume | 16 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2012 |
Research Keywords
- Blocking probability
- critical load
- generalized Engset formula
- high utilization
- optical burst switching (OBS)
Publisher's Copyright Statement
- COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Zhang, J., Wong, E. W. M., & Zukerman, M. (2012). Modeling an OBS node under critical load and high utilization conditions. IEEE Communications Letters, 16(4), 544-546. [6168151]. https://doi.org/10.1109/LCOMM.2012.030512.112537.