Academic Journals Database
Disseminating quality controlled scientific knowledge

Performance and cost analysis of all-optical switching: OBS and OCS

Author(s): Ekularn Dhavarudha | Chalie Charoenlarpnopparut | Suwan Runggeratigul

Journal: Songklanakarin Journal of Science and Technology
ISSN 0125-3395

Volume: 33;
Issue: 4;
Start page: 459;
Date: 2011;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: optical burst switching | optical circuit switching | contention resolution | blocking resolution | service level agreement

This paper presents a study of performance and cost analysis of optical circuit switching (OCS) and optical burstswitching (OBS) by proposing the clear images of their node architectures and cost formulations. Then, we apply servicelevel agreement (SLA) of the high quality of service application in the terms of network blocking probability and averagenetwork delay to demonstrate OCS and OBS performances, their investment costs, and network dimensioning methodology.Applying SLA to our studies can illustrate the impact of contention resolution and blocking resolution schemes to theperformances and costs of OBS and OCS, accordingly. The simulations illustrate that OBS applying WC gives the bestperformance among all architectures deploying the same offered bandwidth. The investigations also show that WC is a majortechnique contributing high performance gain to both OCS and OBS. Especially for OBS, WC is an important scheme allowingOBS high data grooming property as its performance gain contributing to OBS is much higher than those of OCS. For thecost analysis, OCS is the most economic among all architectures. BA provides the most cost effectiveness among all OBScontention resolution schemes. Lastly, FDL is the least cost effective scheme as it gives little performance enhancement butadds more cost to the network.
Save time & money - Smart Internet Solutions     

Tango Rapperswil
Tango Rapperswil