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Dimensioning and energy efficiency of multi-rate metro rings

Abstract : Due to the ever-growing network capac- ity demand, energy-efficient and scalable networking solutions are needed in all networking segments. This paper focuses on the metro segment and compares the power consumption for four different technologies: Ethernet, Reconfigurable Optical Add-Drop Multiplex- ers (ROADM), Optical Transport Networks (OTN), and an optical packet switching (OPS) solution called Packet Optical Add-Drop Multiplexers ("POADM"), which was recently proposed. A novel resource allocation strategy for POADM- based OPS multi-rate rings is proposed for the first time. The multi-rate POADM ring network resource allocation problem is shown to be NP-hard and solved using both an MILP formulation and a heuristic. The MILP formulation and the heuristic are compared, along with dimensioning results for Ethernet and ROADM/OTN ring networks. Results show that multi- rate POADM rings achieve savings up to 10% with respect to single-rate design and can be enabled by assigning a different rate to each wavelength. Fur- thermore, POADM rings can be up to 5 times more energy-efficient than Ethernet rings and 30% than ROADM rings, assuming similar network efficiencies.
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Yvan Pointurier, Bogdan Uscumlic, Isabella Cerutti, Annie Gravey, Jean-Christophe Antona. Dimensioning and energy efficiency of multi-rate metro rings. Journal of Lightwave Technology, Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA), 2012, 30 (22), pp.3552-3564. ⟨10.1109/JLT.2012.2222864⟩. ⟨hal-00942450⟩



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