Energy-efficient lightpath provisioning in a static WDM network with dedicated path protection
2011 (English)In: International Conference on Transparent Optical Networks, IEEE , 2011, 1-5 p.Conference paper (Refereed)
The interest in the energy consumption of communication networks has risen in the recent years. In an effort to tackle this problem, several approaches have been presented to reduce the power consumed by the entire network infrastructure, including optical transport. Most of the solutions studied and proposed in the literature, however, pay little or no attention to the power consumed to ensure the resiliency of the overall network. In wavelength division multiplexing (WDM) networks resilient to single failures, an innovative strategy that can be adopted to reduce power consumption entails setting to sleep mode the optical devices supporting solely protection lightpaths. To take full advantage of this strategy, it is important to optimally route the lightpaths so that the number of devices supporting exclusively protection lightpaths is maximized. An optimal solution for this provisioning problem was previously presented, but features a limited scalability with the network size. This paper first proposes a scalable and efficient heuristic that chooses the route of the working and protection lightpaths with the aim to maximize the power saving. The performance of the heuristic is compared with the optimal solution and a sensitivity analysis of the drained power is carried out by considering a variety of networking scenarios. Up to 20% of the network links can be set to sleep leading to significant power saving, especially at low load and when the power consumption in sleep mode is negligible.
Place, publisher, year, edition, pages
IEEE , 2011. 1-5 p.
dedicated path protection;energy consumption;energy-efficient lightpath provisioning;optical transport;static WDM network;wavelength division multiplexing;telecommunication network routing;wavelength division multiplexing;
IdentifiersURN: urn:nbn:se:kth:diva-78850DOI: 10.1109/ICTON.2011.5971042ISI: 000297859300279ScopusID: 2-s2.0-80155189476ISBN: 978-1-4577-0880-0OAI: oai:DiVA.org:kth-78850DiVA: diva2:492950
2011 13th International Conference on Transparent Optical Networks, ICTON 2011; Stockholm; 26 June 2011 through 30 June 2011
FunderICT - The Next Generation
QC 201507072012-02-082012-02-082015-07-07Bibliographically approved