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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Drakulic, S. Skorin-Kapov, N. |
| Copyright Year | 2013 |
| Description | Author affiliation: Telecommun. Res. Center Vienna (FTW), Vienna, Austria (Drakulic, S.) || Centro Univ. de la Defensa de San Javier, Spanish Air Force Acad., Murcia, Spain (Skorin-Kapov, N.) |
| Abstract | As networks continue to expand, energy consumption is increasingly becoming a major issue, affecting not only the operational costs, but also the associated emission of greenhouse gasses (GHG). Thus, reducing power consumption, as well as GHGs (primarily $CO_{2})$ to reduce the carbon footprint of the network, has started to play a significant role in network planning. In networks with both renewable and non-renewable power sources, minimizing only the overall power consumption without considering the associated $CO_{2}$ levels emitted by individual nodes can lead to unnecessarily high levels of GHG emissions. Conversely, strictly minimizing GHG emission by avoiding non-renewable power sources may lead to longer routes with significantly increased overall power consumption (higher operational costs) which is not very attractive to operators. In this paper, we present a hybrid approach for green routing and wavelength assignment (RWA) in backbone optical networks which reduces both criteria, searching for an advantageous trade-off between costs and environmental-friendliness. An integer linear programming (ILP) formulation for the problem is proposed which minimizes the overall energy consumption as well as the total GHGs emitted, scaled by a tunable penalty factor. GHG emissions are calculated according to GHG-conversion factors of individual nodes representing the amount of $CO_{2}$ emitted per kWh of energy consumed. Results indicate that advantageous trade-offs can be achieved by selecting appropriate penalty factor values which yield RWA solutions with low power consumption, GHG emissions, and, additionally, lower costs of the associated electric bill. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 726892 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479906833 |
| ISSN | 21612064 |
| DOI | 10.1109/ICTON.2013.6602956 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-23 |
| Publisher Place | Spain |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Power demand Green products Air pollution Optical fiber networks Renewable energy sources IP networks Topology integer linear programming routing and wavelength assignment energy efficiency greenhouse gas emission renewable energy |
| Content Type | Text |
| Resource Type | Article |
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