Home // ICSNC 2012, The Seventh International Conference on Systems and Networks Communications // View article
Authors:
Jared Morell
Gokhan Sahin
Keywords: deadline-driven traffic; elastic optical network; optical OFDM; routing modulation level and spectrum assignment; network reconfiguration
Abstract:
Spectrum-sliced elastic optical networks, enabled by technological advances such as CO-OFDM, bandwidth-variable transponders, bandwidth-variable optical cross-connects, and optical multi-level modulation, provide a means to divide the spectrum on a finer granularity than WDM and to slice-off just the adequate amount for each connection. It is envisioned that these networks will carry various types of traffic with different service level guarantees, including deadline-driven requests (DDRs) that require the data to be transferred by a given deadline without imposing a specific constant bandwidth requirement. As a result, DDRs can be provisioned with variable transmission rates between their arrival times and deadlines. We consider the DDR-provisioning problem in a reconfigurable elastic optical network that supports such bandwidth readjustments through minimal reconfiguration in the network, and develop a distance-adaptive routing, spectrum assignment, and reconfiguration algorithm for this purpose. Our results show major improvement in performance due to bandwidth reallocation of DDRs in elastic networks over a range of reconfiguration delay parameters.
Pages: 175 to 179
Copyright: Copyright (c) IARIA, 2012
Publication date: November 18, 2012
Published in: conference
ISSN: 2163-9027
ISBN: 978-1-61208-231-8
Location: Lisbon, Portugal
Dates: from November 18, 2012 to November 23, 2012