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Migration Strategies towards All Optical Metropolitan Access Rings

Summary: 1
Migration Strategies towards All Optical
Metropolitan Access Rings
Jorge Finochietto, Javier Aracil, ´Angel Ferreiro, Juan P. Fern´andez-Palacios, ´Oscar Gonz´alez
Politecnico di Torino, C.so Duca degli Abruzzi, 24,10129 Torino (Italy) e-mail:
Universidad Aut´onoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain e-mail:
Telef´onica I+D, Emilio Vargas, 6, 28043-Madrid (Spain) e-mail: {olivo, jpfpg, ogondio}@tid.es
Nowadays, network operators are steadily deploying Optical Circuit Switching (OCS) equipment in their
metropolitan networks, in order to cope with the traffic increase and, most importantly, in order to reduce
the CAPEX and OPEX 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 to comparative analysis of OBS versus OCS,
specially 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 study is specifically targeted
towards optimizing the number of optoelectronic (O/E) receivers and wavelengths, with real traffic matrices from
the metropolitan rings in the city of Madrid, Spain. Such matrices also include traffic projections of foreseeable


Source: Rico, Javier Aracil - Departamento de Ingeniería Informática, Universidad Autonoma de Madrid


Collections: Computer Technologies and Information Sciences