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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 30, Iss. 2 — Jan. 15, 2012
  • pp: 215–221

Energy and Cost Efficiency of Adaptive and Mixed-Line-Rate IP Over DWDM Networks

Axel Klekamp, Ulrich Gebhard, and Frank Ilchmann

Journal of Lightwave Technology, Vol. 30, Issue 2, pp. 215-221 (2012)


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Abstract

Optimization of IP over DWDM networks is studied under constraints of cost (CAPEX) and energy consumption. Realistic IP traffic mapped to the optical DWDM layer together with leased L1/L2 lines form the basic traffic load which is expanded by a factor of 33 and 100 for a 10-year projection. General power and cost savings are taken into account for the 2020 scenarios. The DWDM core network (Germany 50) is analyzed for mixed-line-rate and reach/bandwidth adaptive scenarios; the latter is realized by optical orthogonal frequency division multiplexing (O-OFDM). Although the adaptive scenario shows to be more hardware efficient in terms of total number of transponders, the mixed-line-rate approach has slight advantages regarding cost and power. Moreover, a hierarchical network can show benefits in cost and power consumption compared to a network without restrictions in routing at high traffic loads.

© 2011 IEEE

Citation
Axel Klekamp, Ulrich Gebhard, and Frank Ilchmann, "Energy and Cost Efficiency of Adaptive and Mixed-Line-Rate IP Over DWDM Networks," J. Lightwave Technol. 30, 215-221 (2012)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-30-2-215


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