Title :
Multi-layer network optimization: Benefits of elastic optical networks
Author_Institution :
Alcatel-Lucent Bell Labs., Stuttgart, Germany
Abstract :
In this paper we study multi-layer optimization of IP over DWDM core network with constraints of energy consumption and CAPEX. Population related IP traffic mapped to the optical DWDM layer together with leased lines form basic traffic load, which is expanded by a factor of 33 and 100 for a 10-year projection. These traffic loads are analyzed for mixed-line-rate and reach/bandwidth elastic network scenarios; the latter one is realized by optical orthogonal frequency division multiplexing (O-OFDM). We also study the effect of routing restrictions achieving networks with and without hierarchy, and of different approaches of frequency grids for DWDM channels.
Keywords :
IP networks; optical fibre networks; telecommunication channels; telecommunication network routing; telecommunication traffic; wavelength division multiplexing; CAPEX; DWDM channel; IP over DWDM core network; IP traffic; O-OFDM; elastic optical network; energy consumption; frequency grid; leased lines; mixed-line-rate; multilayer network optimization; optical DWDM layer; optical orthogonal frequency division multiplexing; reach/bandwidth elastic network; routing restriction; traffic load; IP networks; Network topology; Optical fiber networks; Optical fibers; Optimization; Telecommunication traffic; Transponders; elastic networks; mixed-line rates; multi-layer networks; network optimization; optical OFDM; optical networks;
Conference_Titel :
Transparent Optical Networks (ICTON), 2012 14th International Conference on
Conference_Location :
Coventry
Print_ISBN :
978-1-4673-2228-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2012.6254388
