Abstract
Nowadays, network operators are steadily deploying optical circuit switching (OCS) equipment in their
metropolitan networks in order to cope with traffic increase and, most importantly, in order to reduce capital
expenditures and operational expenditures of existing active technologies. On the other hand, optical burst
switching (OBS) technology is expected to become mature in the medium term, and it may be used as an alternative to
current OCS networks due to its potential advantages in terms of bandwidth allocation granularity. While OBS is
being extensively studied in the literature, little attention has been paid in conducting a comparative analysis of
OBS versus OCS, especially concerning cost analysis. In this paper, we provide a comparative analysis of OBS versus
OCS as an evolutionary technology for all-optical rings in the metropolitan-access network. This paper is
specifically targeted toward optimizing the number of optoelectronic receivers and wavelengths with real traffic
matrices from the metropolitan rings in Madrid, Spain. Such matrices also include traffic projections of foreseeable
broadband services, which are based on a market analysis from the largest operator in Spain. Our findings show that
OCS might be more efficient than OBS in the metro-access segment, which is characterized by a highly centralized
traffic pattern. However, the more distributed the traffic is, the more efficient the OBS is as well. Consequently,
OBS might be better suited to metro-core networks, which show a more distributed and dynamic traffic pattern.
© 2007 IEEE
PDF Article
More Like This
An All-Optical Grooming Switch for Interconnecting Access and Metro Ring Networks [Invited]
R. Bonk, P. Vorreau, D. Hillerkuss, W. Freude, G. Zarris, D. Simeonidou, F. Parmigiani, P. Petropoulos, R. Weerasuriya, S. Ibrahim, A. D. Ellis, D. Klonidis, I. Tomkos, and J. Leuthold
J. Opt. Commun. Netw. 3(3) 206-214 (2011)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription